379532809 has 4 divisors (see below), whose sum is σ = 399508240. Its totient is φ = 359557380.

The previous prime is 379532801. The next prime is 379532819. The reversal of 379532809 is 908235973.

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 379532809 - 2³ = 379532801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (379532801) 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, 9987687 + ... + 9987724.

It is an arithmetic number, because the mean of its divisors is an integer number (99877060).

Almost surely, 2^379532809 is an apocalyptic number.

It is an amenable number.

379532809 is a deficient number, since it is larger than the sum of its proper divisors (19975431).

379532809 is a wasteful number, since it uses less digits than its factorization.

379532809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19975430.

The product of its (nonzero) digits is 408240, while the sum is 46.

The square root of 379532809 is about 19481.6018078596. The cubic root of 379532809 is about 724.0186859894.

The spelling of 379532809 in words is "three hundred seventy-nine million, five hundred thirty-two thousand, eight hundred nine".