4999126639 has 12 divisors (see below), whose sum is σ = 5418092712. Its totient is φ = 4610455200.

The previous prime is 4999126631. The next prime is 4999126661. The reversal of 4999126639 is 9366219994.

It is not a de Polignac number, because 4999126639 - 2³ = 4999126631 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4999126631) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 185269 + ... + 210529.

It is an arithmetic number, because the mean of its divisors is an integer number (451507726).

Almost surely, 2^4999126639 is an apocalyptic number.

4999126639 is a deficient number, since it is larger than the sum of its proper divisors (418966073).

4999126639 is a wasteful number, since it uses less digits than its factorization.

4999126639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26458 (or 26445 counting only the distinct ones).

The product of its digits is 5668704, while the sum is 58.

The square root of 4999126639 is about 70704.5022540998. The cubic root of 4999126639 is about 1709.8763791257.

The spelling of 4999126639 in words is "four billion, nine hundred ninety-nine million, one hundred twenty-six thousand, six hundred thirty-nine".