40864040 has 48 divisors (see below), whose sum is σ = 106960500. Its totient is φ = 14009856.

The previous prime is 40864001. The next prime is 40864051. The reversal of 40864040 is 4046804.

It can be written as a sum of positive squares in 2 ways, for example, as 39513796 + 1350244 = 6286^2 + 1162^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8465 + ... + 12384.

Almost surely, 2^40864040 is an apocalyptic number.

40864040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40864040 is an abundant number, since it is smaller than the sum of its proper divisors (66096460).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40864040 is a wasteful number, since it uses less digits than its factorization.

40864040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20874 (or 20863 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 26.

The square root of 40864040 is about 6392.4987289791. The cubic root of 40864040 is about 344.4401477862.

The spelling of 40864040 in words is "forty million, eight hundred sixty-four thousand, forty".