400079446 has 24 divisors (see below), whose sum is σ = 667417104. Its totient is φ = 179655840.

The previous prime is 400079431. The next prime is 400079461. The reversal of 400079446 is 644970004.

It is an interprime number because it is at equal distance from previous prime (400079431) and next prime (400079461).

It is a super-2 number, since 2×400079446² = 320127126223333832, 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 in 11 ways as a sum of consecutive naturals, for example, 3490 + ... + 28501.

It is an arithmetic number, because the mean of its divisors is an integer number (27809046).

Almost surely, 2^400079446 is an apocalyptic number.

400079446 is a deficient number, since it is larger than the sum of its proper divisors (267337658).

400079446 is a wasteful number, since it uses less digits than its factorization.

400079446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32056 (or 32043 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 34.

The square root of 400079446 is about 20001.9860513900. The cubic root of 400079446 is about 736.8550767600.

The spelling of 400079446 in words is "four hundred million, seventy-nine thousand, four hundred forty-six".