399240610220 has 24 divisors (see below), whose sum is σ = 838445174784. Its totient is φ = 159688645376.

The previous prime is 399240610207. The next prime is 399240610303. The reversal of 399240610220 is 22016042993.

It is a happy 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, 34109 + ... + 894228.

It is an arithmetic number, because the mean of its divisors is an integer number (34935215616).

Almost surely, 2^399240610220 is an apocalyptic number.

It is an amenable number.

399240610220 is an abundant number, since it is smaller than the sum of its proper divisors (439204564564).

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

399240610220 is a wasteful number, since it uses less digits than its factorization.

399240610220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 949849 (or 949847 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 38.

The spelling of 399240610220 in words is "three hundred ninety-nine billion, two hundred forty million, six hundred ten thousand, two hundred twenty".