279972001 has 4 divisors (see below), whose sum is σ = 280440000. Its totient is φ = 279504004.

The previous prime is 279971999. The next prime is 279972019. The reversal of 279972001 is 100279972.

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 279972001 - 2¹ = 279971999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (279972041) 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, 233101 + ... + 234298.

It is an arithmetic number, because the mean of its divisors is an integer number (70110000).

Almost surely, 2^279972001 is an apocalyptic number.

It is an amenable number.

279972001 is a deficient number, since it is larger than the sum of its proper divisors (467999).

279972001 is an equidigital number, since it uses as much as digits as its factorization.

279972001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 467998.

The product of its (nonzero) digits is 15876, while the sum is 37.

The square root of 279972001 is about 16732.3638796196. The cubic root of 279972001 is about 654.1914549809.

The spelling of 279972001 in words is "two hundred seventy-nine million, nine hundred seventy-two thousand, one".