40310409 has 4 divisors (see below), whose sum is σ = 53747216. Its totient is φ = 26873604.

The previous prime is 40310407. The next prime is 40310411. The reversal of 40310409 is 90401304.

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 an interprime number because it is at equal distance from previous prime (40310407) and next prime (40310411).

It is not a de Polignac number, because 40310409 - 2¹ = 40310407 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40310401) 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, 6718399 + ... + 6718404.

It is an arithmetic number, because the mean of its divisors is an integer number (13436804).

Almost surely, 2^40310409 is an apocalyptic number.

It is an amenable number.

40310409 is a deficient number, since it is larger than the sum of its proper divisors (13436807).

40310409 is a wasteful number, since it uses less digits than its factorization.

40310409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13436806.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 40310409 is about 6349.0478813756. The cubic root of 40310409 is about 342.8775639870.

The spelling of 40310409 in words is "forty million, three hundred ten thousand, four hundred nine".