69492971 has 4 divisors (see below), whose sum is σ = 69631632. Its totient is φ = 69354312.

The previous prime is 69492953. The next prime is 69493037. The reversal of 69492971 is 17929496.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-69492971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (69492901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68576 + ... + 69581.

It is an arithmetic number, because the mean of its divisors is an integer number (17407908).

Almost surely, 2^69492971 is an apocalyptic number.

69492971 is a deficient number, since it is larger than the sum of its proper divisors (138661).

69492971 is a wasteful number, since it uses less digits than its factorization.

69492971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138660.

The product of its digits is 244944, while the sum is 47.

The square root of 69492971 is about 8336.2444182018. The cubic root of 69492971 is about 411.1310648514.

The spelling of 69492971 in words is "sixty-nine million, four hundred ninety-two thousand, nine hundred seventy-one".