39436990 has 16 divisors (see below), whose sum is σ = 71651952. Its totient is φ = 15626944.

The previous prime is 39436981. The next prime is 39436993. The reversal of 39436990 is 9963493.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39436993) 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, 17359 + ... + 19498.

It is an arithmetic number, because the mean of its divisors is an integer number (4478247).

Almost surely, 2^39436990 is an apocalyptic number.

39436990 is a deficient number, since it is larger than the sum of its proper divisors (32214962).

39436990 is a wasteful number, since it uses less digits than its factorization.

39436990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36971.

The product of its (nonzero) digits is 157464, while the sum is 43.

The square root of 39436990 is about 6279.8877378501. The cubic root of 39436990 is about 340.3830458052.

The spelling of 39436990 in words is "thirty-nine million, four hundred thirty-six thousand, nine hundred ninety".