39869490 has 32 divisors (see below), whose sum is σ = 98988480. Its totient is φ = 10265024.

The previous prime is 39869477. The next prime is 39869527. The reversal of 39869490 is 9496893.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22044 + ... + 23783.

It is an arithmetic number, because the mean of its divisors is an integer number (3093390).

Almost surely, 2^39869490 is an apocalyptic number.

39869490 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

39869490 is an abundant number, since it is smaller than the sum of its proper divisors (59118990).

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

39869490 is a wasteful number, since it uses less digits than its factorization.

39869490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45866.

The product of its (nonzero) digits is 419904, while the sum is 48.

The square root of 39869490 is about 6314.2291691069. The cubic root of 39869490 is about 341.6228358077.

The spelling of 39869490 in words is "thirty-nine million, eight hundred sixty-nine thousand, four hundred ninety".