401279156 has 6 divisors (see below), whose sum is σ = 702238530. Its totient is φ = 200639576.

The previous prime is 401279141. The next prime is 401279173. The reversal of 401279156 is 651972104.

It can be written as a sum of positive squares in only one way, i.e., 313856656 + 87422500 = 17716^2 + 9350^2 .

It is a super-2 number, since 2×401279156² = 322049922080144672, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50159891 + ... + 50159898.

It is an arithmetic number, because the mean of its divisors is an integer number (117039755).

Almost surely, 2^401279156 is an apocalyptic number.

It is an amenable number.

401279156 is a deficient number, since it is larger than the sum of its proper divisors (300959374).

401279156 is a wasteful number, since it uses less digits than its factorization.

401279156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100319793 (or 100319791 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 401279156 is about 20031.9533745464. The cubic root of 401279156 is about 737.5908724949.

The spelling of 401279156 in words is "four hundred one million, two hundred seventy-nine thousand, one hundred fifty-six".