2497729947 has 16 divisors (see below), whose sum is σ = 3527248032. Its totient is φ = 1566740480.

The previous prime is 2497729939. The next prime is 2497729961. The reversal of 2497729947 is 7499277942.

It is a cyclic number.

It is not a de Polignac number, because 2497729947 - 2³ = 2497729939 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2497729547) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 271747 + ... + 280787.

It is an arithmetic number, because the mean of its divisors is an integer number (220453002).

Almost surely, 2^2497729947 is an apocalyptic number.

2497729947 is a deficient number, since it is larger than the sum of its proper divisors (1029518085).

2497729947 is a wasteful number, since it uses less digits than its factorization.

2497729947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14478.

The product of its digits is 16003008, while the sum is 60.

The square root of 2497729947 is about 49977.2943145185. The cubic root of 2497729947 is about 1356.7978924420.

The spelling of 2497729947 in words is "two billion, four hundred ninety-seven million, seven hundred twenty-nine thousand, nine hundred forty-seven".