401400652 has 12 divisors (see below), whose sum is σ = 703087840. Its totient is φ = 200518416.

The previous prime is 401400613. The next prime is 401400661. The reversal of 401400652 is 256004104.

It is a super-2 number, since 2×401400652² = 322244966852050208, which contains 22 as substring.

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 in 3 ways as a sum of consecutive naturals, for example, 40452 + ... + 49387.

Almost surely, 2^401400652 is an apocalyptic number.

It is an amenable number.

401400652 is a deficient number, since it is larger than the sum of its proper divisors (301687188).

401400652 is a wasteful number, since it uses less digits than its factorization.

401400652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90960 (or 90958 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 401400652 is about 20034.9857000199. The cubic root of 401400652 is about 737.6653055478.

Adding to 401400652 its reverse (256004104), we get a palindrome (657404756).

The spelling of 401400652 in words is "four hundred one million, four hundred thousand, six hundred fifty-two".