40455313 has 4 divisors (see below), whose sum is σ = 42584560. Its totient is φ = 38326068.

The previous prime is 40455301. The next prime is 40455323. The reversal of 40455313 is 31355404.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40455313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40455323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1064595 + ... + 1064632.

It is an arithmetic number, because the mean of its divisors is an integer number (10646140).

Almost surely, 2^40455313 is an apocalyptic number.

It is an amenable number.

40455313 is a deficient number, since it is larger than the sum of its proper divisors (2129247).

40455313 is a wasteful number, since it uses less digits than its factorization.

40455313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2129246.

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 40455313 is about 6360.4491193626. The cubic root of 40455313 is about 343.2879204920.

Subtracting from 40455313 its reverse (31355404), we obtain a palindrome (9099909).

The spelling of 40455313 in words is "forty million, four hundred fifty-five thousand, three hundred thirteen".