390438101792 has 18 divisors (see below), whose sum is σ = 768681971883. Its totient is φ = 195217283552.

The previous prime is 390438101749. The next prime is 390438101803. The reversal of 390438101792 is 297101834093.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in only one way, i.e., 195219050896 + 195219050896 = 441836^2 + 441836^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=441836.

It is a super-2 number, since 2×390438101792² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 3479459 + ... + 3589917.

Almost surely, 2^390438101792 is an apocalyptic number.

390438101792 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

390438101792 is a deficient number, since it is larger than the sum of its proper divisors (378243870091).

390438101792 is an frugal number, since it uses more digits than its factorization.

390438101792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220928 (or 110461 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 47.

The spelling of 390438101792 in words is "three hundred ninety billion, four hundred thirty-eight million, one hundred one thousand, seven hundred ninety-two".