2499908399 has 4 divisors (see below), whose sum is σ = 2547076536. Its totient is φ = 2452740264.

The previous prime is 2499908371. The next prime is 2499908407. The reversal of 2499908399 is 9938099942.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9938099942 = 2 ⋅4969049971.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2499908399 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 (2499908309) 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, 23583989 + ... + 23584094.

It is an arithmetic number, because the mean of its divisors is an integer number (636769134).

Almost surely, 2^2499908399 is an apocalyptic number.

2499908399 is a deficient number, since it is larger than the sum of its proper divisors (47168137).

2499908399 is an equidigital number, since it uses as much as digits as its factorization.

2499908399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47168136.

The product of its (nonzero) digits is 11337408, while the sum is 62.

The square root of 2499908399 is about 49999.0839816091. The cubic root of 2499908399 is about 1357.1922318705.

The spelling of 2499908399 in words is "two billion, four hundred ninety-nine million, nine hundred eight thousand, three hundred ninety-nine".