69409231 has 4 divisors (see below), whose sum is σ = 70189200. Its totient is φ = 68629264.

The previous prime is 69409211. The next prime is 69409243. The reversal of 69409231 is 13290496.

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 69409231 - 2⁵ = 69409199 is a prime.

It is a super-2 number, since 2×69409231² = 9635282696022722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69409201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 389851 + ... + 390028.

It is an arithmetic number, because the mean of its divisors is an integer number (17547300).

Almost surely, 2^69409231 is an apocalyptic number.

69409231 is a deficient number, since it is larger than the sum of its proper divisors (779969).

69409231 is an equidigital number, since it uses as much as digits as its factorization.

69409231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 779968.

The product of its (nonzero) digits is 11664, while the sum is 34.

The square root of 69409231 is about 8331.2202587616. The cubic root of 69409231 is about 410.9658589180.

The spelling of 69409231 in words is "sixty-nine million, four hundred nine thousand, two hundred thirty-one".