921017379 has 8 divisors (see below), whose sum is σ = 1228486672. Its totient is φ = 613779840.

The previous prime is 921017369. The next prime is 921017389. The reversal of 921017379 is 973710129.

It is an interprime number because it is at equal distance from previous prime (921017369) and next prime (921017389).

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

It is not a de Polignac number, because 921017379 - 2²³ = 912628771 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (921017329) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48442 + ... + 64719.

It is an arithmetic number, because the mean of its divisors is an integer number (153560834).

Almost surely, 2^921017379 is an apocalyptic number.

921017379 is a deficient number, since it is larger than the sum of its proper divisors (307469293).

921017379 is a wasteful number, since it uses less digits than its factorization.

921017379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115877.

The product of its (nonzero) digits is 23814, while the sum is 39.

The square root of 921017379 is about 30348.2681383963. The cubic root of 921017379 is about 972.9472055411.

The spelling of 921017379 in words is "nine hundred twenty-one million, seventeen thousand, three hundred seventy-nine".