40458491 has 4 divisors (see below), whose sum is σ = 40662000. Its totient is φ = 40254984.

The previous prime is 40458463. The next prime is 40458497. The reversal of 40458491 is 19485404.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40458491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40458497) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101456 + ... + 101853.

It is an arithmetic number, because the mean of its divisors is an integer number (10165500).

Almost surely, 2^40458491 is an apocalyptic number.

40458491 is a deficient number, since it is larger than the sum of its proper divisors (203509).

40458491 is a wasteful number, since it uses less digits than its factorization.

40458491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203508.

The product of its (nonzero) digits is 23040, while the sum is 35.

The square root of 40458491 is about 6360.6989395820. The cubic root of 40458491 is about 343.2969093438.

The spelling of 40458491 in words is "forty million, four hundred fifty-eight thousand, four hundred ninety-one".