290990979 has 12 divisors (see below), whose sum is σ = 424654776. Its totient is φ = 191993472.

The previous prime is 290990971. The next prime is 290991007. The reversal of 290990979 is 979099092.

It is not a de Polignac number, because 290990979 - 2³ = 290990971 is a prime.

It is not an unprimeable number, because it can be changed into a prime (290990971) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 165789 + ... + 167534.

It is an arithmetic number, because the mean of its divisors is an integer number (35387898).

Almost surely, 2^290990979 is an apocalyptic number.

290990979 is a deficient number, since it is larger than the sum of its proper divisors (133663797).

290990979 is a wasteful number, since it uses less digits than its factorization.

290990979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333426 (or 333423 counting only the distinct ones).

The product of its (nonzero) digits is 826686, while the sum is 54.

The square root of 290990979 is about 17058.4576969901. The cubic root of 290990979 is about 662.6636910813.

The spelling of 290990979 in words is "two hundred ninety million, nine hundred ninety thousand, nine hundred seventy-nine".