5012779649 has 4 divisors (see below), whose sum is σ = 5015296836. Its totient is φ = 5010262464.

The previous prime is 5012779637. The next prime is 5012779687. The reversal of 5012779649 is 9469772105.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2815045249 + 2197734400 = 53057^2 + 46880^2 .

It is a cyclic number.

It is not a de Polignac number, because 5012779649 - 2⁸ = 5012779393 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5012779597 and 5012779606.

It is not an unprimeable number, because it can be changed into a prime (5012779619) 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, 1255604 + ... + 1259589.

It is an arithmetic number, because the mean of its divisors is an integer number (1253824209).

Almost surely, 2^5012779649 is an apocalyptic number.

It is an amenable number.

5012779649 is a deficient number, since it is larger than the sum of its proper divisors (2517187).

5012779649 is a wasteful number, since it uses less digits than its factorization.

5012779649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2517186.

The product of its (nonzero) digits is 952560, while the sum is 50.

The square root of 5012779649 is about 70800.9862148826. The cubic root of 5012779649 is about 1711.4315667191.

The spelling of 5012779649 in words is "five billion, twelve million, seven hundred seventy-nine thousand, six hundred forty-nine".