83979147 has 16 divisors (see below), whose sum is σ = 128099072. Its totient is φ = 47939040.

The previous prime is 83979121. The next prime is 83979163. The reversal of 83979147 is 74197938.

It is not a de Polignac number, because 83979147 - 2¹⁶ = 83913611 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 83979096 and 83979105.

It is not an unprimeable number, because it can be changed into a prime (83979047) 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, 32808 + ... + 35274.

It is an arithmetic number, because the mean of its divisors is an integer number (8006192).

Almost surely, 2^83979147 is an apocalyptic number.

83979147 is a deficient number, since it is larger than the sum of its proper divisors (44119925).

83979147 is a wasteful number, since it uses less digits than its factorization.

83979147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4098.

The product of its digits is 381024, while the sum is 48.

The square root of 83979147 is about 9164.0136948828. The cubic root of 83979147 is about 437.9156704686.

The spelling of 83979147 in words is "eighty-three million, nine hundred seventy-nine thousand, one hundred forty-seven".