390984402050 has 54 divisors (see below), whose sum is σ = 799452516009. Its totient is φ = 142158460400.

The previous prime is 390984402043. The next prime is 390984402079. The reversal of 390984402050 is 50204489093.

It can be written as a sum of positive squares in 2 ways, for example, as 383164714009 + 7819688041 = 619003^2 + 88429^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=442145.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 390984401992 and 390984402010.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 48631931 + ... + 48639969.

Almost surely, 2^390984402050 is an apocalyptic number.

390984402050 is an abundant number, since it is smaller than the sum of its proper divisors (408468113959).

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

390984402050 is an frugal number, since it uses more digits than its factorization.

390984402050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16112 (or 8057 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 44.

The spelling of 390984402050 in words is "three hundred ninety billion, nine hundred eighty-four million, four hundred two thousand, fifty".