99439967 has 8 divisors (see below), whose sum is σ = 109699920. Its totient is φ = 89383360.

The previous prime is 99439961. The next prime is 99439997. The reversal of 99439967 is 76993499.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 99439967 - 2⁶ = 99439903 is a prime.

It is a super-2 number, since 2×99439967² = 19776614073922178, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99439961) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49808 + ... + 51765.

It is an arithmetic number, because the mean of its divisors is an integer number (13712490).

Almost surely, 2^99439967 is an apocalyptic number.

99439967 is a deficient number, since it is larger than the sum of its proper divisors (10259953).

99439967 is a wasteful number, since it uses less digits than its factorization.

99439967 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101673.

The product of its digits is 3306744, while the sum is 56.

The square root of 99439967 is about 9971.9590352147. The cubic root of 99439967 is about 463.2907798103.

The spelling of 99439967 in words is "ninety-nine million, four hundred thirty-nine thousand, nine hundred sixty-seven".