400400848 has 20 divisors (see below), whose sum is σ = 783030240. Its totient is φ = 198328544.

The previous prime is 400400837. The next prime is 400400857. The reversal of 400400848 is 848004004.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 115228 + ... + 118651.

It is an arithmetic number, because the mean of its divisors is an integer number (39151512).

Almost surely, 2^400400848 is an apocalyptic number.

It is an amenable number.

400400848 is a deficient number, since it is larger than the sum of its proper divisors (382629392).

400400848 is a wasteful number, since it uses less digits than its factorization.

400400848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233994 (or 233988 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 28.

The square root of 400400848 is about 20010.0186906459. The cubic root of 400400848 is about 737.0523403353.

The spelling of 400400848 in words is "four hundred million, four hundred thousand, eight hundred forty-eight".