40049599 has 2 divisors, whose sum is σ = 40049600. Its totient is φ = 40049598.

The previous prime is 40049591. The next prime is 40049617. The reversal of 40049599 is 99594004.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40049599 - 2³ = 40049591 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40049591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20024799 + 20024800.

It is an arithmetic number, because the mean of its divisors is an integer number (20024800).

Almost surely, 2^40049599 is an apocalyptic number.

40049599 is a deficient number, since it is larger than the sum of its proper divisors (1).

40049599 is an equidigital number, since it uses as much as digits as its factorization.

40049599 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 58320, while the sum is 40.

The square root of 40049599 is about 6328.4752508009. The cubic root of 40049599 is about 342.1364861116.

The spelling of 40049599 in words is "forty million, forty-nine thousand, five hundred ninety-nine".