40563993 has 8 divisors (see below), whose sum is σ = 56932000. Its totient is φ = 25619328.

The previous prime is 40563979. The next prime is 40563997. The reversal of 40563993 is 39936504.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40563993 - 2⁴ = 40563977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40563997) 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, 355768 + ... + 355881.

It is an arithmetic number, because the mean of its divisors is an integer number (7116500).

Almost surely, 2^40563993 is an apocalyptic number.

It is an amenable number.

40563993 is a deficient number, since it is larger than the sum of its proper divisors (16368007).

40563993 is a wasteful number, since it uses less digits than its factorization.

40563993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 711671.

The product of its (nonzero) digits is 87480, while the sum is 39.

The square root of 40563993 is about 6368.9868111027. The cubic root of 40563993 is about 343.5950509148.

The spelling of 40563993 in words is "forty million, five hundred sixty-three thousand, nine hundred ninety-three".