400577842 has 24 divisors (see below), whose sum is σ = 700634880. Its totient is φ = 171266760.

The previous prime is 400577839. The next prime is 400577843. The reversal of 400577842 is 248775004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400577843) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38367 + ... + 47677.

It is an arithmetic number, because the mean of its divisors is an integer number (29193120).

Almost surely, 2^400577842 is an apocalyptic number.

400577842 is a deficient number, since it is larger than the sum of its proper divisors (300057038).

400577842 is a wasteful number, since it uses less digits than its factorization.

400577842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9766 (or 9759 counting only the distinct ones).

The product of its (nonzero) digits is 62720, while the sum is 37.

The square root of 400577842 is about 20014.4408365560. The cubic root of 400577842 is about 737.1609270389.

The spelling of 400577842 in words is "four hundred million, five hundred seventy-seven thousand, eight hundred forty-two".