83879649 has 48 divisors (see below), whose sum is σ = 147663360. Its totient is φ = 44945280.

The previous prime is 83879647. The next prime is 83879659. The reversal of 83879649 is 94697838.

It is not a de Polignac number, because 83879649 - 2¹ = 83879647 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 83879595 and 83879604.

It is not an unprimeable number, because it can be changed into a prime (83879641) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 309384 + ... + 309654.

It is an arithmetic number, because the mean of its divisors is an integer number (3076320).

Almost surely, 2^83879649 is an apocalyptic number.

It is an amenable number.

83879649 is a deficient number, since it is larger than the sum of its proper divisors (63783711).

83879649 is a wasteful number, since it uses less digits than its factorization.

83879649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335 (or 298 counting only the distinct ones).

The product of its digits is 2612736, while the sum is 54.

The square root of 83879649 is about 9158.5833511521. The cubic root of 83879649 is about 437.7426554836.

The spelling of 83879649 in words is "eighty-three million, eight hundred seventy-nine thousand, six hundred forty-nine".