400354488 has 80 divisors (see below), whose sum is σ = 1187358480. Its totient is φ = 125597952.

The previous prime is 400354481. The next prime is 400354489. The reversal of 400354488 is 884453004.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400354481) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 7156 + ... + 29187.

It is an arithmetic number, because the mean of its divisors is an integer number (14841981).

Almost surely, 2^400354488 is an apocalyptic number.

It is an amenable number.

400354488 is an abundant number, since it is smaller than the sum of its proper divisors (787003992).

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

400354488 is a wasteful number, since it uses less digits than its factorization.

400354488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36378 (or 36365 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 36.

The square root of 400354488 is about 20008.8602374048. The cubic root of 400354488 is about 737.0238929552.

The spelling of 400354488 in words is "four hundred million, three hundred fifty-four thousand, four hundred eighty-eight".