40449513 has 16 divisors (see below), whose sum is σ = 59956736. Its totient is φ = 24088320.

The previous prime is 40449509. The next prime is 40449581. The reversal of 40449513 is 31594404.

It is not a de Polignac number, because 40449513 - 2² = 40449509 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40449313) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15520 + ... + 17937.

It is an arithmetic number, because the mean of its divisors is an integer number (3747296).

Almost surely, 2^40449513 is an apocalyptic number.

It is an amenable number.

40449513 is a deficient number, since it is larger than the sum of its proper divisors (19507223).

40449513 is a wasteful number, since it uses less digits than its factorization.

40449513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33504.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 40449513 is about 6359.9931603737. The cubic root of 40449513 is about 343.2715141994.

The spelling of 40449513 in words is "forty million, four hundred forty-nine thousand, five hundred thirteen".