921291713 has 8 divisors (see below), whose sum is σ = 924251136. Its totient is φ = 918338400.

The previous prime is 921291673. The next prime is 921291737. The reversal of 921291713 is 317192129.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 921291713 - 2⁸ = 921291457 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (921291743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 625568 + ... + 627038.

It is an arithmetic number, because the mean of its divisors is an integer number (115531392).

Almost surely, 2^921291713 is an apocalyptic number.

It is an amenable number.

921291713 is a deficient number, since it is larger than the sum of its proper divisors (2959423).

921291713 is a wasteful number, since it uses less digits than its factorization.

921291713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3055.

The product of its digits is 6804, while the sum is 35.

The square root of 921291713 is about 30352.7875655598. The cubic root of 921291713 is about 973.0437965531.

The spelling of 921291713 in words is "nine hundred twenty-one million, two hundred ninety-one thousand, seven hundred thirteen".