290716985 has 32 divisors (see below), whose sum is σ = 383056128. Its totient is φ = 210528000.

The previous prime is 290716973. The next prime is 290716991. The reversal of 290716985 is 589617092.

It is not a de Polignac number, because 290716985 - 2²⁰ = 289668409 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1158110 + ... + 1158360.

It is an arithmetic number, because the mean of its divisors is an integer number (11970504).

Almost surely, 2^290716985 is an apocalyptic number.

It is an amenable number.

290716985 is a deficient number, since it is larger than the sum of its proper divisors (92339143).

290716985 is a wasteful number, since it uses less digits than its factorization.

290716985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 545.

The product of its (nonzero) digits is 272160, while the sum is 47.

The square root of 290716985 is about 17050.4247747673. The cubic root of 290716985 is about 662.4556400819.

The spelling of 290716985 in words is "two hundred ninety million, seven hundred sixteen thousand, nine hundred eighty-five".