389709554820 has 96 divisors (see below), whose sum is σ = 1159318355328. Its totient is φ = 97475561472.

The previous prime is 389709554809. The next prime is 389709554831. The reversal of 389709554820 is 28455907983.

It is an interprime number because it is at equal distance from previous prime (389709554809) and next prime (389709554831).

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, 353134 + ... + 950853.

It is an arithmetic number, because the mean of its divisors is an integer number (12076232868).

Almost surely, 2^389709554820 is an apocalyptic number.

389709554820 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

389709554820 is an abundant number, since it is smaller than the sum of its proper divisors (769608800508).

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

389709554820 is a wasteful number, since it uses less digits than its factorization.

389709554820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1304309 (or 1304307 counting only the distinct ones).

The product of its (nonzero) digits is 21772800, while the sum is 60.

The spelling of 389709554820 in words is "three hundred eighty-nine billion, seven hundred nine million, five hundred fifty-four thousand, eight hundred twenty".