7799449977 has 36 divisors (see below), whose sum is σ = 12414538032. Its totient is φ = 4679532000.

The previous prime is 7799449939. The next prime is 7799449981.

7799449977 is a `hidden beast` number, since 7 + 7 + 99 + 449 + 97 + 7 = 666.

7799449977 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 7799449977 - 2⁶ = 7799449913 is a prime.

It is a zygodrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (7799449577) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1006038 + ... + 1013760.

Almost surely, 2^7799449977 is an apocalyptic number.

It is an amenable number.

7799449977 is a deficient number, since it is larger than the sum of its proper divisors (4615088055).

7799449977 is a wasteful number, since it uses less digits than its factorization.

7799449977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7942 (or 7838 counting only the distinct ones).

The product of its digits is 252047376, while the sum is 72.

The square root of 7799449977 is about 88314.4947163262. The cubic root of 7799449977 is about 1983.1458661372.

The spelling of 7799449977 in words is "seven billion, seven hundred ninety-nine million, four hundred forty-nine thousand, nine hundred seventy-seven".