2650139979 has 16 divisors (see below), whose sum is σ = 3820981248. Its totient is φ = 1627452032.

The previous prime is 2650139959. The next prime is 2650139981. The reversal of 2650139979 is 9799310562.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 2650139979 - 2¹⁹ = 2649615691 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is not an unprimeable number, because it can be changed into a prime (2650139959) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 550407 + ... + 555200.

It is an arithmetic number, because the mean of its divisors is an integer number (238811328).

Almost surely, 2^2650139979 is an apocalyptic number.

2650139979 is a deficient number, since it is larger than the sum of its proper divisors (1170841269).

2650139979 is a wasteful number, since it uses less digits than its factorization.

2650139979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1105674.

The product of its (nonzero) digits is 918540, while the sum is 51.

The square root of 2650139979 is about 51479.5102832185. The cubic root of 2650139979 is about 1383.8518688494.

The spelling of 2650139979 in words is "two billion, six hundred fifty million, one hundred thirty-nine thousand, nine hundred seventy-nine".