99439677 has 16 divisors (see below), whose sum is σ = 147609280. Its totient is φ = 66162096.

The previous prime is 99439667. The next prime is 99439709. The reversal of 99439677 is 77693499.

It is not a de Polignac number, because 99439677 - 2²⁶ = 32330813 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 (99439667) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11403 + ... + 18135.

It is an arithmetic number, because the mean of its divisors is an integer number (9225580).

Almost surely, 2^99439677 is an apocalyptic number.

It is an amenable number.

99439677 is a deficient number, since it is larger than the sum of its proper divisors (48169603).

99439677 is a wasteful number, since it uses less digits than its factorization.

99439677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7289 (or 7283 counting only the distinct ones).

The product of its digits is 2571912, while the sum is 54.

The square root of 99439677 is about 9971.9444944304. The cubic root of 99439677 is about 463.2903294399.

The spelling of 99439677 in words is "ninety-nine million, four hundred thirty-nine thousand, six hundred seventy-seven".