379366921 has 4 divisors (see below), whose sum is σ = 380186752. Its totient is φ = 378547092.

The previous prime is 379366919. The next prime is 379366937. The reversal of 379366921 is 129663973.

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 an emirpimes, since its reverse is a distinct semiprime: 129663973 = 1439 ⋅90107.

It is a cyclic number.

It is not a de Polignac number, because 379366921 - 2¹ = 379366919 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (379366021) 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, 409221 + ... + 410146.

It is an arithmetic number, because the mean of its divisors is an integer number (95046688).

Almost surely, 2^379366921 is an apocalyptic number.

It is an amenable number.

379366921 is a deficient number, since it is larger than the sum of its proper divisors (819831).

379366921 is an equidigital number, since it uses as much as digits as its factorization.

379366921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 819830.

The product of its digits is 367416, while the sum is 46.

The square root of 379366921 is about 19477.3437870773. The cubic root of 379366921 is about 723.9131847767.

The spelling of 379366921 in words is "three hundred seventy-nine million, three hundred sixty-six thousand, nine hundred twenty-one".