83900039 has 2 divisors, whose sum is σ = 83900040. Its totient is φ = 83900038.

The previous prime is 83899973. The next prime is 83900041. The reversal of 83900039 is 93000938.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 83900039 - 2¹⁶ = 83834503 is a prime.

It is a Sophie Germain prime.

Together with 83900041, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 83899978 and 83900014.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83900059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41950019 + 41950020.

It is an arithmetic number, because the mean of its divisors is an integer number (41950020).

Almost surely, 2^83900039 is an apocalyptic number.

83900039 is a deficient number, since it is larger than the sum of its proper divisors (1).

83900039 is an equidigital number, since it uses as much as digits as its factorization.

83900039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 83900039 is about 9159.6964469353. The cubic root of 83900039 is about 437.7781223687.

The spelling of 83900039 in words is "eighty-three million, nine hundred thousand, thirty-nine".