39499989 has 8 divisors (see below), whose sum is σ = 53188512. Its totient is φ = 26072400.

The previous prime is 39499973. The next prime is 39499991. The reversal of 39499989 is 98999493.

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

It is not a de Polignac number, because 39499989 - 2⁴ = 39499973 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39429989) 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, 64879 + ... + 65484.

It is an arithmetic number, because the mean of its divisors is an integer number (6648564).

Almost surely, 2^39499989 is an apocalyptic number.

It is an amenable number.

39499989 is a deficient number, since it is larger than the sum of its proper divisors (13688523).

39499989 is a wasteful number, since it uses less digits than its factorization.

39499989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130467.

The product of its digits is 5668704, while the sum is 60.

The square root of 39499989 is about 6284.9016698752. The cubic root of 39499989 is about 340.5641987709.

The spelling of 39499989 in words is "thirty-nine million, four hundred ninety-nine thousand, nine hundred eighty-nine".