400873448 has 8 divisors (see below), whose sum is σ = 751637730. Its totient is φ = 200436720.

The previous prime is 400873433. The next prime is 400873469. The reversal of 400873448 is 844378004.

It can be written as a sum of positive squares in only one way, i.e., 245172964 + 155700484 = 15658^2 + 12478^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×400873448² = 321399042622817408, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25054583 + ... + 25054598.

Almost surely, 2^400873448 is an apocalyptic number.

It is an amenable number.

400873448 is a deficient number, since it is larger than the sum of its proper divisors (350764282).

400873448 is a wasteful number, since it uses less digits than its factorization.

400873448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50109187 (or 50109183 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 38.

The square root of 400873448 is about 20021.8242925064. The cubic root of 400873448 is about 737.3422114987.

The spelling of 400873448 in words is "four hundred million, eight hundred seventy-three thousand, four hundred forty-eight".