921162713 has 4 divisors (see below), whose sum is σ = 921246720. Its totient is φ = 921078708.

The previous prime is 921162709. The next prime is 921162743. The reversal of 921162713 is 317261129.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 921162713 - 2² = 921162709 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 921162713.

It is not an unprimeable number, because it can be changed into a prime (921162743) 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, 22553 + ... + 48486.

It is an arithmetic number, because the mean of its divisors is an integer number (230311680).

Almost surely, 2^921162713 is an apocalyptic number.

It is an amenable number.

921162713 is a deficient number, since it is larger than the sum of its proper divisors (84007).

921162713 is a wasteful number, since it uses less digits than its factorization.

921162713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84006.

The product of its digits is 4536, while the sum is 32.

The square root of 921162713 is about 30350.6624804138. The cubic root of 921162713 is about 972.9983789773.

The spelling of 921162713 in words is "nine hundred twenty-one million, one hundred sixty-two thousand, seven hundred thirteen".