400641179 has 4 divisors (see below), whose sum is σ = 413565120. Its totient is φ = 387717240.

The previous prime is 400641169. The next prime is 400641221. The reversal of 400641179 is 971146004.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-400641179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (400641149) 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, 6461924 + ... + 6461985.

It is an arithmetic number, because the mean of its divisors is an integer number (103391280).

Almost surely, 2^400641179 is an apocalyptic number.

400641179 is a deficient number, since it is larger than the sum of its proper divisors (12923941).

400641179 is a wasteful number, since it uses less digits than its factorization.

400641179 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12923940.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 400641179 is about 20016.0230565415. The cubic root of 400641179 is about 737.1997768339.

The spelling of 400641179 in words is "four hundred million, six hundred forty-one thousand, one hundred seventy-nine".