83749379 has 18 divisors (see below), whose sum is σ = 99303804. Its totient is φ = 70424760.

The previous prime is 83749357. The next prime is 83749427. The reversal of 83749379 is 97394738.

It is not a de Polignac number, because 83749379 - 2²⁰ = 82700803 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83749319) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 170324 + ... + 170814.

It is an arithmetic number, because the mean of its divisors is an integer number (5516878).

Almost surely, 2^83749379 is an apocalyptic number.

83749379 is a deficient number, since it is larger than the sum of its proper divisors (15554425).

83749379 is an equidigital number, since it uses as much as digits as its factorization.

83749379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 623 (or 557 counting only the distinct ones).

The product of its digits is 1143072, while the sum is 50.

The square root of 83749379 is about 9151.4686799442. The cubic root of 83749379 is about 437.5159247537.

The spelling of 83749379 in words is "eighty-three million, seven hundred forty-nine thousand, three hundred seventy-nine".