82374309 has 6 divisors (see below), whose sum is σ = 118985126. Its totient is φ = 54916200.

The previous prime is 82374301. The next prime is 82374323. The reversal of 82374309 is 90347328.

It can be written as a sum of positive squares in only one way, i.e., 79602084 + 2772225 = 8922^2 + 1665^2 .

It is not a de Polignac number, because 82374309 - 2³ = 82374301 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82374301) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4576342 + ... + 4576359.

Almost surely, 2^82374309 is an apocalyptic number.

It is an amenable number.

82374309 is a deficient number, since it is larger than the sum of its proper divisors (36610817).

82374309 is a wasteful number, since it uses less digits than its factorization.

82374309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9152707 (or 9152704 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 82374309 is about 9076.0293631081. The cubic root of 82374309 is about 435.1081934604.

The spelling of 82374309 in words is "eighty-two million, three hundred seventy-four thousand, three hundred nine".