69490931 has 4 divisors (see below), whose sum is σ = 71887200. Its totient is φ = 67094664.

The previous prime is 69490919. The next prime is 69490969. The reversal of 69490931 is 13909496.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 69490931 - 2⁶ = 69490867 is a prime.

It is a super-2 number, since 2×69490931² = 9657978982493522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (69490901) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1198091 + ... + 1198148.

It is an arithmetic number, because the mean of its divisors is an integer number (17971800).

Almost surely, 2^69490931 is an apocalyptic number.

69490931 is a deficient number, since it is larger than the sum of its proper divisors (2396269).

69490931 is a wasteful number, since it uses less digits than its factorization.

69490931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2396268.

The product of its (nonzero) digits is 52488, while the sum is 41.

The square root of 69490931 is about 8336.1220600469. The cubic root of 69490931 is about 411.1270418278.

The spelling of 69490931 in words is "sixty-nine million, four hundred ninety thousand, nine hundred thirty-one".