4999436642 has 8 divisors (see below), whose sum is σ = 7508909100. Its totient is φ = 2496466944.

The previous prime is 4999436641. The next prime is 4999436669. The reversal of 4999436642 is 2466349994.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 4615707721 + 383728921 = 67939^2 + 19589^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (4999436641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1623767 + ... + 1626842.

Almost surely, 2^4999436642 is an apocalyptic number.

4999436642 is a deficient number, since it is larger than the sum of its proper divisors (2509472458).

4999436642 is a wasteful number, since it uses less digits than its factorization.

4999436642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3251380.

The product of its digits is 10077696, while the sum is 56.

The square root of 4999436642 is about 70706.6944638200. The cubic root of 4999436642 is about 1709.9117223559.

The spelling of 4999436642 in words is "four billion, nine hundred ninety-nine million, four hundred thirty-six thousand, six hundred forty-two".