379638916409 has 4 divisors (see below), whose sum is σ = 379683478260. Its totient is φ = 379594354560.

The previous prime is 379638916399. The next prime is 379638916417. The reversal of 379638916409 is 904619836973.

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 260059201600 + 119579714809 = 509960^2 + 345803^2 .

It is a cyclic number.

It is not a de Polignac number, because 379638916409 - 2²⁸ = 379370480953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (379638916309) 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, 22268144 + ... + 22285185.

It is an arithmetic number, because the mean of its divisors is an integer number (94920869565).

Almost surely, 2^379638916409 is an apocalyptic number.

It is an amenable number.

379638916409 is a deficient number, since it is larger than the sum of its proper divisors (44561851).

379638916409 is an equidigital number, since it uses as much as digits as its factorization.

379638916409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44561850.

The product of its (nonzero) digits is 52907904, while the sum is 65.

The spelling of 379638916409 in words is "three hundred seventy-nine billion, six hundred thirty-eight million, nine hundred sixteen thousand, four hundred nine".