40064788 has 6 divisors (see below), whose sum is σ = 70113386. Its totient is φ = 20032392.

The previous prime is 40064723. The next prime is 40064797. The reversal of 40064788 is 88746004.

It can be written as a sum of positive squares in only one way, i.e., 33500944 + 6563844 = 5788^2 + 2562^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5008095 + ... + 5008102.

Almost surely, 2^40064788 is an apocalyptic number.

It is an amenable number.

40064788 is a deficient number, since it is larger than the sum of its proper divisors (30048598).

40064788 is a wasteful number, since it uses less digits than its factorization.

40064788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10016201 (or 10016199 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 37.

The square root of 40064788 is about 6329.6751891389. The cubic root of 40064788 is about 342.1797329388.

The spelling of 40064788 in words is "forty million, sixty-four thousand, seven hundred eighty-eight".