397279401 has 4 divisors (see below), whose sum is σ = 529705872. Its totient is φ = 264852932.

The previous prime is 397279373. The next prime is 397279429. The reversal of 397279401 is 104972793.

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, and also an emirpimes, since its reverse is a distinct semiprime: 104972793 = 3 ⋅34990931.

It is an interprime number because it is at equal distance from previous prime (397279373) and next prime (397279429).

It is a cyclic number.

It is not a de Polignac number, because 397279401 - 2⁵ = 397279369 is a prime.

It is not an unprimeable number, because it can be changed into a prime (397279481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66213231 + ... + 66213236.

It is an arithmetic number, because the mean of its divisors is an integer number (132426468).

Almost surely, 2^397279401 is an apocalyptic number.

It is an amenable number.

397279401 is a deficient number, since it is larger than the sum of its proper divisors (132426471).

397279401 is a wasteful number, since it uses less digits than its factorization.

397279401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132426470.

The product of its (nonzero) digits is 95256, while the sum is 42.

The square root of 397279401 is about 19931.8689790998. The cubic root of 397279401 is about 735.1320360694.

The spelling of 397279401 in words is "three hundred ninety-seven million, two hundred seventy-nine thousand, four hundred one".