399349492620 has 96 divisors (see below), whose sum is σ = 1215883748352. Its totient is φ = 97347011328.

The previous prime is 399349492589. The next prime is 399349492649. The reversal of 399349492620 is 26294943993.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2405032 + ... + 2565711.

It is an arithmetic number, because the mean of its divisors is an integer number (12665455712).

Almost surely, 2^399349492620 is an apocalyptic number.

399349492620 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

399349492620 is an abundant number, since it is smaller than the sum of its proper divisors (816534255732).

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

399349492620 is a wasteful number, since it uses less digits than its factorization.

399349492620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4970871 (or 4970869 counting only the distinct ones).

The product of its (nonzero) digits is 22674816, while the sum is 60.

The spelling of 399349492620 in words is "three hundred ninety-nine billion, three hundred forty-nine million, four hundred ninety-two thousand, six hundred twenty".