40253609 has 8 divisors (see below), whose sum is σ = 46224480. Its totient is φ = 34668000.

The previous prime is 40253597. The next prime is 40253617. The reversal of 40253609 is 90635204.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40253609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40253209) 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, 96092 + ... + 96509.

It is an arithmetic number, because the mean of its divisors is an integer number (5778060).

Almost surely, 2^40253609 is an apocalyptic number.

It is an amenable number.

40253609 is a deficient number, since it is larger than the sum of its proper divisors (5970871).

40253609 is a wasteful number, since it uses less digits than its factorization.

40253609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192631.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 40253609 is about 6344.5731928949. The cubic root of 40253609 is about 342.7164426565.

The spelling of 40253609 in words is "forty million, two hundred fifty-three thousand, six hundred nine".