279477379 has 8 divisors (see below), whose sum is σ = 289329120. Its totient is φ = 269640000.

The previous prime is 279477349. The next prime is 279477409. The reversal of 279477379 is 973774972.

It is an interprime number because it is at equal distance from previous prime (279477349) and next prime (279477409).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 279477379 - 2¹³ = 279469187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (279477329) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49554 + ... + 54904.

It is an arithmetic number, because the mean of its divisors is an integer number (36166140).

Almost surely, 2^279477379 is an apocalyptic number.

279477379 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

279477379 is a deficient number, since it is larger than the sum of its proper divisors (9851741).

279477379 is a wasteful number, since it uses less digits than its factorization.

279477379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7181.

The product of its digits is 4667544, while the sum is 55.

The square root of 279477379 is about 16717.5769476321. The cubic root of 279477379 is about 653.8059780702.

The spelling of 279477379 in words is "two hundred seventy-nine million, four hundred seventy-seven thousand, three hundred seventy-nine".