379890665 has 16 divisors (see below), whose sum is σ = 568356480. Its totient is φ = 236814720.

The previous prime is 379890661. The next prime is 379890671. The reversal of 379890665 is 566098973.

It is not a de Polignac number, because 379890665 - 2² = 379890661 is a prime.

It is not an unprimeable number, because it can be changed into a prime (379890661) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 492980 + ... + 493749.

It is an arithmetic number, because the mean of its divisors is an integer number (35522280).

Almost surely, 2^379890665 is an apocalyptic number.

379890665 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

379890665 is a deficient number, since it is larger than the sum of its proper divisors (188465815).

379890665 is a wasteful number, since it uses less digits than its factorization.

379890665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 986752.

The product of its (nonzero) digits is 2449440, while the sum is 53.

The square root of 379890665 is about 19490.7841042889. The cubic root of 379890665 is about 724.2461700920.

The spelling of 379890665 in words is "three hundred seventy-nine million, eight hundred ninety thousand, six hundred sixty-five".