40400764 has 12 divisors (see below), whose sum is σ = 74422600. Its totient is φ = 19137168.

The previous prime is 40400747. The next prime is 40400771. The reversal of 40400764 is 46700404.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 265719 + ... + 265870.

Almost surely, 2^40400764 is an apocalyptic number.

It is an amenable number.

40400764 is a deficient number, since it is larger than the sum of its proper divisors (34021836).

40400764 is a wasteful number, since it uses less digits than its factorization.

40400764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 531612 (or 531610 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 25.

The square root of 40400764 is about 6356.1595322962. The cubic root of 40400764 is about 343.1335572842.

The spelling of 40400764 in words is "forty million, four hundred thousand, seven hundred sixty-four".