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99130901 = 313197771
BaseRepresentation
bin1011110100010…
…01111000010101
320220112101000212
411322021320111
5200334142101
613500415205
72312412242
oct572117025
9226471025
1099130901
1150a58571
1229247505
13176cb04c
14d2465c9
158a821bb
hex5e89e15

99130901 has 4 divisors (see below), whose sum is σ = 102328704. Its totient is φ = 95933100.

The previous prime is 99130891. The next prime is 99130921. The reversal of 99130901 is 10903199.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-99130901 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99130921) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1598855 + ... + 1598916.

It is an arithmetic number, because the mean of its divisors is an integer number (25582176).

Almost surely, 299130901 is an apocalyptic number.

It is an amenable number.

99130901 is a deficient number, since it is larger than the sum of its proper divisors (3197803).

99130901 is a wasteful number, since it uses less digits than its factorization.

99130901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3197802.

The product of its (nonzero) digits is 2187, while the sum is 32.

The square root of 99130901 is about 9956.4502208367. The cubic root of 99130901 is about 462.8103022099.

The spelling of 99130901 in words is "ninety-nine million, one hundred thirty thousand, nine hundred one".

Divisors: 1 31 3197771 99130901