40295909 has 4 divisors (see below), whose sum is σ = 40322304. Its totient is φ = 40269516.

The previous prime is 40295887. The next prime is 40295911. The reversal of 40295909 is 90959204.

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-40295909 is a prime.

It is a super-3 number, since 3×40295909³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40295509) 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, 10757 + ... + 14010.

It is an arithmetic number, because the mean of its divisors is an integer number (10080576).

Almost surely, 2^40295909 is an apocalyptic number.

It is an amenable number.

40295909 is a deficient number, since it is larger than the sum of its proper divisors (26395).

40295909 is a wasteful number, since it uses less digits than its factorization.

40295909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26394.

The product of its (nonzero) digits is 29160, while the sum is 38.

The square root of 40295909 is about 6347.9058751686. The cubic root of 40295909 is about 342.8364470560.

The spelling of 40295909 in words is "forty million, two hundred ninety-five thousand, nine hundred nine".