400596890 has 8 divisors (see below), whose sum is σ = 721074420. Its totient is φ = 160238752.

The previous prime is 400596883. The next prime is 400596899. The reversal of 400596890 is 98695004.

It can be written as a sum of positive squares in 2 ways, for example, as 333537169 + 67059721 = 18263^2 + 8189^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (400596899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20029835 + ... + 20029854.

Almost surely, 2^400596890 is an apocalyptic number.

400596890 is a deficient number, since it is larger than the sum of its proper divisors (320477530).

400596890 is a wasteful number, since it uses less digits than its factorization.

400596890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40059696.

The product of its (nonzero) digits is 77760, while the sum is 41.

The square root of 400596890 is about 20014.9166873110. The cubic root of 400596890 is about 737.1726111756.

The spelling of 400596890 in words is "four hundred million, five hundred ninety-six thousand, eight hundred ninety".