40349513 has 4 divisors (see below), whose sum is σ = 40917888. Its totient is φ = 39781140.

The previous prime is 40349503. The next prime is 40349539. The reversal of 40349513 is 31594304.

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 40349513 - 2¹⁰ = 40348489 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (40349503) 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, 284081 + ... + 284222.

It is an arithmetic number, because the mean of its divisors is an integer number (10229472).

Almost surely, 2^40349513 is an apocalyptic number.

It is an amenable number.

40349513 is a deficient number, since it is larger than the sum of its proper divisors (568375).

40349513 is an equidigital number, since it uses as much as digits as its factorization.

40349513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 568374.

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

The square root of 40349513 is about 6352.1266517600. The cubic root of 40349513 is about 342.9884001324.

The spelling of 40349513 in words is "forty million, three hundred forty-nine thousand, five hundred thirteen".