40613491 has 8 divisors (see below), whose sum is σ = 41395968. Its totient is φ = 39837000.

The previous prime is 40613483. The next prime is 40613501. The reversal of 40613491 is 19431604.

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

It is a cyclic number.

It is not a de Polignac number, because 40613491 - 2³ = 40613483 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40613401) 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, 13626 + ... + 16336.

It is an arithmetic number, because the mean of its divisors is an integer number (5174496).

Almost surely, 2^40613491 is an apocalyptic number.

40613491 is a deficient number, since it is larger than the sum of its proper divisors (782477).

40613491 is a wasteful number, since it uses less digits than its factorization.

40613491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2993.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 40613491 is about 6372.8714877989. The cubic root of 40613491 is about 343.7347507946.

The spelling of 40613491 in words is "forty million, six hundred thirteen thousand, four hundred ninety-one".