40663407 has 12 divisors (see below), whose sum is σ = 55728456. Its totient is φ = 26373600.

The previous prime is 40663391. The next prime is 40663411. The reversal of 40663407 is 70436604.

It is not a de Polignac number, because 40663407 - 2⁴ = 40663391 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40663457) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 844 + ... + 9057.

It is an arithmetic number, because the mean of its divisors is an integer number (4644038).

Almost surely, 2^40663407 is an apocalyptic number.

40663407 is a deficient number, since it is larger than the sum of its proper divisors (15065049).

40663407 is an equidigital number, since it uses as much as digits as its factorization.

40663407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9978 (or 9941 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 30.

The square root of 40663407 is about 6376.7865731887. The cubic root of 40663407 is about 343.8755155085.

The spelling of 40663407 in words is "forty million, six hundred sixty-three thousand, four hundred seven".