39420399 has 8 divisors (see below), whose sum is σ = 55652400. Its totient is φ = 24734336.

The previous prime is 39420391. The next prime is 39420431. The reversal of 39420399 is 99302493.

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

It is a cyclic number.

It is not a de Polignac number, because 39420399 - 2³ = 39420391 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39420391) 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, 386424 + ... + 386525.

It is an arithmetic number, because the mean of its divisors is an integer number (6956550).

Almost surely, 2^39420399 is an apocalyptic number.

39420399 is a deficient number, since it is larger than the sum of its proper divisors (16232001).

39420399 is a wasteful number, since it uses less digits than its factorization.

39420399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 772969.

The product of its (nonzero) digits is 52488, while the sum is 39.

The square root of 39420399 is about 6278.5666357856. The cubic root of 39420399 is about 340.3353064685.

The spelling of 39420399 in words is "thirty-nine million, four hundred twenty thousand, three hundred ninety-nine".