972290290 has 16 divisors (see below), whose sum is σ = 1769788440. Its totient is φ = 384545920.

The previous prime is 972290281. The next prime is 972290309. The reversal of 972290290 is 92092279.

It can be written as a sum of positive squares in 4 ways, for example, as 751143649 + 221146641 = 27407^2 + 14871^2 .

It is a super-4 number, since 4×972290290⁴ (a number of 37 digits) contains 4444 as substring. Note that it is a super-d number also for d = 3.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 545341 + ... + 547120.

Almost surely, 2^972290290 is an apocalyptic number.

972290290 is a deficient number, since it is larger than the sum of its proper divisors (797498150).

972290290 is a wasteful number, since it uses less digits than its factorization.

972290290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1092557.

The product of its (nonzero) digits is 40824, while the sum is 40.

The square root of 972290290 is about 31181.5697167413. The cubic root of 972290290 is about 990.6767776577.

The spelling of 972290290 in words is "nine hundred seventy-two million, two hundred ninety thousand, two hundred ninety".