Search a number
99000971 = 197502543
BaseRepresentation
bin1011110011010…
…10001010001011
320220021202210122
411321222022023
5200321012341
613453533455
72311331366
oct571521213
9226252718
1099000971
1150979993
12291a428b
1317683b74
14d2110dd
158a5894b
hex5e6a28b

99000971 has 4 divisors (see below), whose sum is σ = 99503712. Its totient is φ = 98498232.

The previous prime is 99000953. The next prime is 99000973. The reversal of 99000971 is 17900099.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-99000971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99000973) 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, 251075 + ... + 251468.

It is an arithmetic number, because the mean of its divisors is an integer number (24875928).

Almost surely, 299000971 is an apocalyptic number.

99000971 is a deficient number, since it is larger than the sum of its proper divisors (502741).

99000971 is a wasteful number, since it uses less digits than its factorization.

99000971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 502740.

The product of its (nonzero) digits is 5103, while the sum is 35.

The square root of 99000971 is about 9949.9231655325. The cubic root of 99000971 is about 462.6080133406.

The spelling of 99000971 in words is "ninety-nine million, nine hundred seventy-one", and thus it is an aban number.

Divisors: 1 197 502543 99000971