40456613 has 4 divisors (see below), whose sum is σ = 41317440. Its totient is φ = 39595788.

The previous prime is 40456601. The next prime is 40456631. The reversal of 40456613 is 31665404.

It is a happy number.

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 not a de Polignac number, because 40456613 - 2⁴ = 40456597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40456693) 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, 430343 + ... + 430436.

It is an arithmetic number, because the mean of its divisors is an integer number (10329360).

Almost surely, 2^40456613 is an apocalyptic number.

It is an amenable number.

40456613 is a deficient number, since it is larger than the sum of its proper divisors (860827).

40456613 is an equidigital number, since it uses as much as digits as its factorization.

40456613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 860826.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 40456613 is about 6360.5513125829. The cubic root of 40456613 is about 343.2915975493.

The spelling of 40456613 in words is "forty million, four hundred fifty-six thousand, six hundred thirteen".