39969340 has 24 divisors (see below), whose sum is σ = 84173040. Its totient is φ = 15942528.

The previous prime is 39969289. The next prime is 39969353. The reversal of 39969340 is 4396993.

It is a happy number.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

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, 4944 + ... + 10216.

It is an arithmetic number, because the mean of its divisors is an integer number (3507210).

Almost surely, 2^39969340 is an apocalyptic number.

It is an amenable number.

39969340 is an abundant number, since it is smaller than the sum of its proper divisors (44203700).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

39969340 is a wasteful number, since it uses less digits than its factorization.

39969340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5661 (or 5659 counting only the distinct ones).

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

The square root of 39969340 is about 6322.1309698550. The cubic root of 39969340 is about 341.9077872294.

The spelling of 39969340 in words is "thirty-nine million, nine hundred sixty-nine thousand, three hundred forty".