379440721 has 4 divisors (see below), whose sum is σ = 413935344. Its totient is φ = 344946100.

The previous prime is 379440709. The next prime is 379440751. The reversal of 379440721 is 127044973.

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.

It is a cyclic number.

It is not a de Polignac number, because 379440721 - 2⁹ = 379440209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (379440701) 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, 17247295 + ... + 17247316.

It is an arithmetic number, because the mean of its divisors is an integer number (103483836).

Almost surely, 2^379440721 is an apocalyptic number.

It is an amenable number.

379440721 is a deficient number, since it is larger than the sum of its proper divisors (34494623).

379440721 is a wasteful number, since it uses less digits than its factorization.

379440721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34494622.

The product of its (nonzero) digits is 42336, while the sum is 37.

The square root of 379440721 is about 19479.2382037902. The cubic root of 379440721 is about 723.9601237920.

The spelling of 379440721 in words is "three hundred seventy-nine million, four hundred forty thousand, seven hundred twenty-one".