39149990 has 16 divisors (see below), whose sum is σ = 76876560. Its totient is φ = 14236320.

The previous prime is 39149989. The next prime is 39150017. The reversal of 39149990 is 9994193.

39149990 is nontrivially palindromic in base 9.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 177845 + ... + 178064.

It is an arithmetic number, because the mean of its divisors is an integer number (4804785).

Almost surely, 2^39149990 is an apocalyptic number.

39149990 is a deficient number, since it is larger than the sum of its proper divisors (37726570).

39149990 is a wasteful number, since it uses less digits than its factorization.

39149990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355927.

The product of its (nonzero) digits is 78732, while the sum is 44.

The square root of 39149990 is about 6256.9952852787. The cubic root of 39149990 is about 339.5553298783. Note that the first 3 decimals are identical.

The spelling of 39149990 in words is "thirty-nine million, one hundred forty-nine thousand, nine hundred ninety".