379992409 has 4 divisors (see below), whose sum is σ = 380042980. Its totient is φ = 379941840.

The previous prime is 379992397. The next prime is 379992433. The reversal of 379992409 is 904299973.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 256160025 + 123832384 = 16005^2 + 11128^2 .

It is a cyclic number.

It is not a de Polignac number, because 379992409 - 2¹¹ = 379990361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (379992209) 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, 11514 + ... + 29875.

It is an arithmetic number, because the mean of its divisors is an integer number (95010745).

Almost surely, 2^379992409 is an apocalyptic number.

It is an amenable number.

379992409 is a deficient number, since it is larger than the sum of its proper divisors (50571).

379992409 is an equidigital number, since it uses as much as digits as its factorization.

379992409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50570.

The product of its (nonzero) digits is 1102248, while the sum is 52.

The square root of 379992409 is about 19493.3939836038. The cubic root of 379992409 is about 724.3108212594.

The spelling of 379992409 in words is "three hundred seventy-nine million, nine hundred ninety-two thousand, four hundred nine".