83998459 has 2 divisors, whose sum is σ = 83998460. Its totient is φ = 83998458.

The previous prime is 83998441. The next prime is 83998469. The reversal of 83998459 is 95489938.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 83998459 - 2¹¹ = 83996411 is a prime.

It is a super-2 number, since 2×83998459² = 14111482228749362, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (83998429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41999229 + 41999230.

It is an arithmetic number, because the mean of its divisors is an integer number (41999230).

Almost surely, 2^83998459 is an apocalyptic number.

83998459 is a deficient number, since it is larger than the sum of its proper divisors (1).

83998459 is an equidigital number, since it uses as much as digits as its factorization.

83998459 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2799360, while the sum is 55.

The square root of 83998459 is about 9165.0673210839. The cubic root of 83998459 is about 437.9492358617.

The spelling of 83998459 in words is "eighty-three million, nine hundred ninety-eight thousand, four hundred fifty-nine".