40499599 has 4 divisors (see below), whose sum is σ = 46285264. Its totient is φ = 34713936.

The previous prime is 40499521. The next prime is 40499617. The reversal of 40499599 is 99599404.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40499599 - 2⁷ = 40499471 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40499509) 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, 2892822 + ... + 2892835.

It is an arithmetic number, because the mean of its divisors is an integer number (11571316).

Almost surely, 2^40499599 is an apocalyptic number.

40499599 is a deficient number, since it is larger than the sum of its proper divisors (5785665).

40499599 is an equidigital number, since it uses as much as digits as its factorization.

40499599 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5785664.

The product of its (nonzero) digits is 524880, while the sum is 49.

The square root of 40499599 is about 6363.9295250655. The cubic root of 40499599 is about 343.4131393538.

The spelling of 40499599 in words is "forty million, four hundred ninety-nine thousand, five hundred ninety-nine".