290634028921 has 16 divisors (see below), whose sum is σ = 310615824384. Its totient is φ = 271298469904.

The previous prime is 290634028901. The next prime is 290634028939. The reversal of 290634028921 is 129820436092.

It is not a de Polignac number, because 290634028921 - 2¹⁷ = 290633897849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (290634028901) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12295 + ... + 762508.

It is an arithmetic number, because the mean of its divisors is an integer number (19413489024).

Almost surely, 2^290634028921 is an apocalyptic number.

It is an amenable number.

290634028921 is a deficient number, since it is larger than the sum of its proper divisors (19981795463).

290634028921 is a wasteful number, since it uses less digits than its factorization.

290634028921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 775220.

The product of its (nonzero) digits is 373248, while the sum is 46.

The spelling of 290634028921 in words is "two hundred ninety billion, six hundred thirty-four million, twenty-eight thousand, nine hundred twenty-one".