83672389 has 2 divisors, whose sum is σ = 83672390. Its totient is φ = 83672388.

The previous prime is 83672363. The next prime is 83672399. The reversal of 83672389 is 98327638.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 76860289 + 6812100 = 8767^2 + 2610^2 .

It is a cyclic number.

It is not a de Polignac number, because 83672389 - 2⁵ = 83672357 is a prime.

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

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83672399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41836194 + 41836195.

It is an arithmetic number, because the mean of its divisors is an integer number (41836195).

Almost surely, 2^83672389 is an apocalyptic number.

It is an amenable number.

83672389 is a deficient number, since it is larger than the sum of its proper divisors (1).

83672389 is an equidigital number, since it uses as much as digits as its factorization.

83672389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 435456, while the sum is 46.

The square root of 83672389 is about 9147.2612841221. The cubic root of 83672389 is about 437.3818155872.

The spelling of 83672389 in words is "eighty-three million, six hundred seventy-two thousand, three hundred eighty-nine".