2492478729 has 64 divisors (see below), whose sum is σ = 4230150400. Its totient is φ = 1437751296.

The previous prime is 2492478721. The next prime is 2492478733. The reversal of 2492478729 is 9278742942.

It is a happy number.

It is not a de Polignac number, because 2492478729 - 2³ = 2492478721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2492478721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 644967 + ... + 648819.

It is an arithmetic number, because the mean of its divisors is an integer number (66096100).

Almost surely, 2^2492478729 is an apocalyptic number.

It is an amenable number.

2492478729 is a deficient number, since it is larger than the sum of its proper divisors (1737671671).

2492478729 is a wasteful number, since it uses less digits than its factorization.

2492478729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3991 (or 3985 counting only the distinct ones).

The product of its digits is 4064256, while the sum is 54.

The square root of 2492478729 is about 49924.7306352273. The cubic root of 2492478729 is about 1355.8463830599.

The spelling of 2492478729 in words is "two billion, four hundred ninety-two million, four hundred seventy-eight thousand, seven hundred twenty-nine".