401427764 has 6 divisors (see below), whose sum is σ = 702498594. Its totient is φ = 200713880.

The previous prime is 401427751. The next prime is 401427781. The reversal of 401427764 is 467724104.

It can be written as a sum of positive squares in only one way, i.e., 384552100 + 16875664 = 19610^2 + 4108^2 .

It is a super-2 number, since 2×401427764² = 322288499420079392, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50178467 + ... + 50178474.

It is an arithmetic number, because the mean of its divisors is an integer number (117083099).

Almost surely, 2^401427764 is an apocalyptic number.

It is an amenable number.

401427764 is a deficient number, since it is larger than the sum of its proper divisors (301070830).

401427764 is a wasteful number, since it uses less digits than its factorization.

401427764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100356945 (or 100356943 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 35.

The square root of 401427764 is about 20035.6623050001. The cubic root of 401427764 is about 737.6819133364.

The spelling of 401427764 in words is "four hundred one million, four hundred twenty-seven thousand, seven hundred sixty-four".