401868356 has 6 divisors (see below), whose sum is σ = 703269630. Its totient is φ = 200934176.

The previous prime is 401868349. The next prime is 401868367. The reversal of 401868356 is 653868104.

It can be written as a sum of positive squares in only one way, i.e., 297010756 + 104857600 = 17234^2 + 10240^2 .

It is a super-2 number, since 2×401868356² = 322996351108285472, which contains 22 as substring.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 50233541 + ... + 50233548.

It is an arithmetic number, because the mean of its divisors is an integer number (117211605).

Almost surely, 2^401868356 is an apocalyptic number.

It is an amenable number.

401868356 is a deficient number, since it is larger than the sum of its proper divisors (301401274).

401868356 is a wasteful number, since it uses less digits than its factorization.

401868356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100467093 (or 100467091 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 41.

The square root of 401868356 is about 20046.6544839781. The cubic root of 401868356 is about 737.9516986232.

The spelling of 401868356 in words is "four hundred one million, eight hundred sixty-eight thousand, three hundred fifty-six".