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999938000961 = 323333232
BaseRepresentation
bin11101000110100001111…
…00110000100001000001
310112121000101202112210100
432203100330300201001
5112340333112012321
62043210513353013
7132146252524554
oct16432074604101
93477011675710
10999938000961
11356086a2a119
12141965268769
13733a849ba13
143657c10869b
151b0260bb326
hexe8d0f30841

999938000961 has 9 divisors (see below), whose sum is σ = 1444359223489. Its totient is φ = 666623334036.

The previous prime is 999938000933. The next prime is 999938000993. The reversal of 999938000961 is 169000839999.

The square root of 999938000961 is 999969.

It is a perfect power (a square), and thus also a powerful number.

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 999938000961 - 29 = 999938000449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (999938005961) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 2833246 + ... + 3166568.

Almost surely, 2999938000961 is an apocalyptic number.

999938000961 is the 999969-th square number.

999938000961 is the 499985-th centered octagonal number.

It is an amenable number.

999938000961 is a deficient number, since it is larger than the sum of its proper divisors (444421222528).

999938000961 is an frugal number, since it uses more digits than its factorization.

999938000961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 666652 (or 333326 counting only the distinct ones).

The product of its (nonzero) digits is 8503056, while the sum is 63.

The spelling of 999938000961 in words is "nine hundred ninety-nine billion, nine hundred thirty-eight million, nine hundred sixty-one", and thus it is an aban number.

Divisors: 1 3 9 333323 999969 2999907 111104222329 333312666987 999938000961