400258066 has 16 divisors (see below), whose sum is σ = 680601600. Its totient is φ = 175011408.

The previous prime is 400258043. The next prime is 400258127. The reversal of 400258066 is 660852004.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 404626 + ... + 405613.

It is an arithmetic number, because the mean of its divisors is an integer number (42537600).

Almost surely, 2^400258066 is an apocalyptic number.

400258066 is a deficient number, since it is larger than the sum of its proper divisors (280343534).

400258066 is a wasteful number, since it uses less digits than its factorization.

400258066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 810273.

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 400258066 is about 20006.4506097408. The cubic root of 400258066 is about 736.9647195428.

The spelling of 400258066 in words is "four hundred million, two hundred fifty-eight thousand, sixty-six".