400737090 has 64 divisors (see below), whose sum is σ = 1096695936. Its totient is φ = 92838912.

The previous prime is 400737061. The next prime is 400737091. The reversal of 400737090 is 90737004.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (400737091) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23592 + ... + 36851.

It is an arithmetic number, because the mean of its divisors is an integer number (17135874).

Almost surely, 2^400737090 is an apocalyptic number.

400737090 is an abundant number, since it is smaller than the sum of its proper divisors (695958846).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

400737090 is a wasteful number, since it uses less digits than its factorization.

400737090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60483.

The product of its (nonzero) digits is 5292, while the sum is 30.

The square root of 400737090 is about 20018.4187687240. The cubic root of 400737090 is about 737.2585991501.

The spelling of 400737090 in words is "four hundred million, seven hundred thirty-seven thousand, ninety".