99439426 has 32 divisors (see below), whose sum is σ = 169128000. Its totient is φ = 43564032.

The previous prime is 99439397. The next prime is 99439429. The reversal of 99439426 is 62493499.

It is not an unprimeable number, because it can be changed into a prime (99439429) 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, 36810 + ... + 39418.

It is an arithmetic number, because the mean of its divisors is an integer number (5285250).

Almost surely, 2^99439426 is an apocalyptic number.

99439426 is a deficient number, since it is larger than the sum of its proper divisors (69688574).

99439426 is a wasteful number, since it uses less digits than its factorization.

99439426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2706.

The product of its digits is 419904, while the sum is 46.

The square root of 99439426 is about 9971.9319091137. The cubic root of 99439426 is about 463.2899396358.

The spelling of 99439426 in words is "ninety-nine million, four hundred thirty-nine thousand, four hundred twenty-six".