400592091400 has 24 divisors (see below), whose sum is σ = 931376612970. Its totient is φ = 160236836480.

The previous prime is 400592091371. The next prime is 400592091401. The reversal of 400592091400 is 4190295004.

It can be written as a sum of positive squares in 3 ways, for example, as 368723415076 + 31868676324 = 607226^2 + 178518^2 .

It is not an unprimeable number, because it can be changed into a prime (400592091401) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1001480029 + ... + 1001480428.

Almost surely, 2^400592091400 is an apocalyptic number.

400592091400 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

400592091400 is an abundant number, since it is smaller than the sum of its proper divisors (530784521570).

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

400592091400 is a wasteful number, since it uses less digits than its factorization.

400592091400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2002960473 (or 2002960464 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 34.

The spelling of 400592091400 in words is "four hundred billion, five hundred ninety-two million, ninety-one thousand, four hundred".