83440999 has 2 divisors, whose sum is σ = 83441000. Its totient is φ = 83440998.

The previous prime is 83440991. The next prime is 83441011. The reversal of 83440999 is 99904438.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 83440999 - 2³ = 83440991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83440991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41720499 + 41720500.

It is an arithmetic number, because the mean of its divisors is an integer number (41720500).

Almost surely, 2^83440999 is an apocalyptic number.

83440999 is a deficient number, since it is larger than the sum of its proper divisors (1).

83440999 is an equidigital number, since it uses as much as digits as its factorization.

83440999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 279936, while the sum is 46.

The square root of 83440999 is about 9134.6044796696. The cubic root of 83440999 is about 436.9782606609.

The spelling of 83440999 in words is "eighty-three million, four hundred forty thousand, nine hundred ninety-nine".