40064456 has 8 divisors (see below), whose sum is σ = 75120870. Its totient is φ = 20032224.

The previous prime is 40064429. The next prime is 40064491. The reversal of 40064456 is 65446004.

It can be written as a sum of positive squares in only one way, i.e., 38019556 + 2044900 = 6166^2 + 1430^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2504021 + ... + 2504036.

Almost surely, 2^40064456 is an apocalyptic number.

It is an amenable number.

40064456 is a deficient number, since it is larger than the sum of its proper divisors (35056414).

40064456 is a wasteful number, since it uses less digits than its factorization.

40064456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5008063 (or 5008059 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 29.

The square root of 40064456 is about 6329.6489634102. The cubic root of 40064456 is about 342.1787877698.

The spelling of 40064456 in words is "forty million, sixty-four thousand, four hundred fifty-six".