400424157 has 24 divisors (see below), whose sum is σ = 663399360. Its totient is φ = 227989440.

The previous prime is 400424153. The next prime is 400424159. The reversal of 400424157 is 751424004.

It is not a de Polignac number, because 400424157 - 2² = 400424153 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 400424157.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400424153) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6394 + ... + 29012.

It is an arithmetic number, because the mean of its divisors is an integer number (27641640).

Almost surely, 2^400424157 is an apocalyptic number.

It is an amenable number.

400424157 is a deficient number, since it is larger than the sum of its proper divisors (262975203).

400424157 is a wasteful number, since it uses less digits than its factorization.

400424157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22913 (or 22910 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 27.

The square root of 400424157 is about 20010.6011154088. The cubic root of 400424157 is about 737.0666423527.

The spelling of 400424157 in words is "four hundred million, four hundred twenty-four thousand, one hundred fifty-seven".