40663401 has 12 divisors (see below), whose sum is σ = 57223152. Its totient is φ = 25681464.

The previous prime is 40663391. The next prime is 40663411. The reversal of 40663401 is 10436604.

It is an interprime number because it is at equal distance from previous prime (40663391) and next prime (40663411).

It is not a de Polignac number, because 40663401 - 2⁵ = 40663369 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40663411) 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, 17691 + ... + 19856.

It is an arithmetic number, because the mean of its divisors is an integer number (4768596).

Almost surely, 2^40663401 is an apocalyptic number.

It is an amenable number.

40663401 is a deficient number, since it is larger than the sum of its proper divisors (16559751).

40663401 is a wasteful number, since it uses less digits than its factorization.

40663401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37588 (or 37569 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 40663401 is about 6376.7861027323. The cubic root of 40663401 is about 343.8754985953.

The spelling of 40663401 in words is "forty million, six hundred sixty-three thousand, four hundred one".