7499669947 has 48 divisors (see below), whose sum is σ = 9890470656. Its totient is φ = 5521521600.

The previous prime is 7499669851. The next prime is 7499669951.

7499669947 is nontrivially palindromic in base 10.

It is a de Polignac number, because none of the positive numbers 2^k-7499669947 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7499669347) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3180693 + ... + 3183049.

It is an arithmetic number, because the mean of its divisors is an integer number (206051472).

Almost surely, 2^7499669947 is an apocalyptic number.

7499669947 is a gapful number since it is divisible by the number (77) formed by its first and last digit.

7499669947 is a deficient number, since it is larger than the sum of its proper divisors (2390800709).

7499669947 is a wasteful number, since it uses less digits than its factorization.

7499669947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2480 (or 2449 counting only the distinct ones).

The product of its digits is 185177664, while the sum is 70.

The square root of 7499669947 is about 86600.6347955949. The cubic root of 7499669947 is about 1957.4051065230.

The spelling of 7499669947 in words is "seven billion, four hundred ninety-nine million, six hundred sixty-nine thousand, nine hundred forty-seven".