2499929 has 4 divisors (see below), whose sum is σ = 2513076. Its totient is φ = 2486784.

The previous prime is 2499923. The next prime is 2499941. The reversal of 2499929 is 9299942.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9299942 = 2 ⋅4649971.

It can be written as a sum of positive squares in 2 ways, for example, as 403225 + 2096704 = 635^2 + 1448^2 .

It is a cyclic number.

It is not a de Polignac number, because 2499929 - 2¹² = 2495833 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a plaindrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 2499929.

It is not an unprimeable number, because it can be changed into a prime (2499923) 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, 6284 + ... + 6669.

It is an arithmetic number, because the mean of its divisors is an integer number (628269).

2^2499929 is an apocalyptic number.

It is an amenable number.

2499929 is a deficient number, since it is larger than the sum of its proper divisors (13147).

2499929 is a wasteful number, since it uses less digits than its factorization.

2499929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13146.

The product of its digits is 104976, while the sum is 44.

The square root of 2499929 is about 1581.1163777534. The cubic root of 2499929 is about 135.7195959932.

The spelling of 2499929 in words is "two million, four hundred ninety-nine thousand, nine hundred twenty-nine".