83072389 has 8 divisors (see below), whose sum is σ = 91247040. Its totient is φ = 75278016.

The previous prime is 83072357. The next prime is 83072393. The reversal of 83072389 is 98327038.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 83072389 - 2⁵ = 83072357 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83072309) by changing a digit.

It is a nontrivial repunit in base 436.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 94612 + ... + 95485.

It is an arithmetic number, because the mean of its divisors is an integer number (11405880).

Almost surely, 2^83072389 is an apocalyptic number.

It is an amenable number.

83072389 is a deficient number, since it is larger than the sum of its proper divisors (8174651).

83072389 is a wasteful number, since it uses less digits than its factorization.

83072389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190139.

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 83072389 is about 9114.4055757904. The cubic root of 83072389 is about 436.3338439243. Note that the first 3 decimals are identical.

The spelling of 83072389 in words is "eighty-three million, seventy-two thousand, three hundred eighty-nine".