39940518 has 8 divisors (see below), whose sum is σ = 79881048. Its totient is φ = 13313504.

The previous prime is 39940487. The next prime is 39940529. The reversal of 39940518 is 81504993.

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

39940518 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3328371 + ... + 3328382.

It is an arithmetic number, because the mean of its divisors is an integer number (9985131).

Almost surely, 2^39940518 is an apocalyptic number.

39940518 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

39940518 is a wasteful number, since it uses less digits than its factorization.

39940518 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6656758.

The product of its (nonzero) digits is 38880, while the sum is 39.

The square root of 39940518 is about 6319.8511058410. The cubic root of 39940518 is about 341.8255839215.

The spelling of 39940518 in words is "thirty-nine million, nine hundred forty thousand, five hundred eighteen".