920290906 has 8 divisors (see below), whose sum is σ = 1380709044. Its totient is φ = 460054560.

The previous prime is 920290873. The next prime is 920290913. The reversal of 920290906 is 609092029.

It can be written as a sum of positive squares in 2 ways, for example, as 909565281 + 10725625 = 30159^2 + 3275^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31995 + ... + 53518.

Almost surely, 2^920290906 is an apocalyptic number.

920290906 is a deficient number, since it is larger than the sum of its proper divisors (460418138).

920290906 is a wasteful number, since it uses less digits than its factorization.

920290906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90896.

The product of its (nonzero) digits is 17496, while the sum is 37.

The square root of 920290906 is about 30336.2968405836. The cubic root of 920290906 is about 972.6913269830.

The spelling of 920290906 in words is "nine hundred twenty million, two hundred ninety thousand, nine hundred six".