89156839 has 2 divisors, whose sum is σ = 89156840. Its totient is φ = 89156838.

The previous prime is 89156831. The next prime is 89156843. The reversal of 89156839 is 93865198.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 89156839 - 2³ = 89156831 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 89156792 and 89156801.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89156831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44578419 + 44578420.

It is an arithmetic number, because the mean of its divisors is an integer number (44578420).

Almost surely, 2^89156839 is an apocalyptic number.

89156839 is a deficient number, since it is larger than the sum of its proper divisors (1).

89156839 is an equidigital number, since it uses as much as digits as its factorization.

89156839 is an evil number, because the sum of its binary digits is even.

The product of its digits is 466560, while the sum is 49.

The square root of 89156839 is about 9442.2899235302. The cubic root of 89156839 is about 446.7366201297.

The spelling of 89156839 in words is "eighty-nine million, one hundred fifty-six thousand, eight hundred thirty-nine".