7499649729 has 16 divisors (see below), whose sum is σ = 11747703744. Its totient is φ = 4195608000.

The previous prime is 7499649727. The next prime is 7499649779. The reversal of 7499649729 is 9279469947.

It is not a de Polignac number, because 7499649729 - 2¹ = 7499649727 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7499649729.

It is not an unprimeable number, because it can be changed into a prime (7499649727) 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, 8740422 + ... + 8741279.

It is an arithmetic number, because the mean of its divisors is an integer number (734231484).

Almost surely, 2^7499649729 is an apocalyptic number.

It is an amenable number.

7499649729 is a deficient number, since it is larger than the sum of its proper divisors (4248054015).

7499649729 is a wasteful number, since it uses less digits than its factorization.

7499649729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17481728.

The product of its digits is 61725888, while the sum is 66.

The square root of 7499649729 is about 86600.5180642703. The cubic root of 7499649729 is about 1957.4033475633.

The spelling of 7499649729 in words is "seven billion, four hundred ninety-nine million, six hundred forty-nine thousand, seven hundred twenty-nine".