40663954 has 16 divisors (see below), whose sum is σ = 64219392. Its totient is φ = 19273408.

The previous prime is 40663937. The next prime is 40663957. The reversal of 40663954 is 45936604.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (40663957) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1287 + ... + 9109.

It is an arithmetic number, because the mean of its divisors is an integer number (4013712).

Almost surely, 2^40663954 is an apocalyptic number.

40663954 is a deficient number, since it is larger than the sum of its proper divisors (23555438).

40663954 is a wasteful number, since it uses less digits than its factorization.

40663954 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7961.

The product of its (nonzero) digits is 77760, while the sum is 37.

The square root of 40663954 is about 6376.8294629855. The cubic root of 40663954 is about 343.8770574277.

The spelling of 40663954 in words is "forty million, six hundred sixty-three thousand, nine hundred fifty-four".