401579213 has 4 divisors (see below), whose sum is σ = 458947680. Its totient is φ = 344210748.

The previous prime is 401579197. The next prime is 401579221. The reversal of 401579213 is 312975104.

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 not a de Polignac number, because 401579213 - 2⁴ = 401579197 is a prime.

It is a super-2 number, since 2×401579213² = 322531728627398738, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 401579213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401579263) 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, 28684223 + ... + 28684236.

It is an arithmetic number, because the mean of its divisors is an integer number (114736920).

Almost surely, 2^401579213 is an apocalyptic number.

It is an amenable number.

401579213 is a deficient number, since it is larger than the sum of its proper divisors (57368467).

401579213 is an equidigital number, since it uses as much as digits as its factorization.

401579213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57368466.

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 401579213 is about 20039.4414343314. The cubic root of 401579213 is about 737.7746715287.

The spelling of 401579213 in words is "four hundred one million, five hundred seventy-nine thousand, two hundred thirteen".