83900249 has 2 divisors, whose sum is σ = 83900250. Its totient is φ = 83900248.

The previous prime is 83900239. The next prime is 83900263. The reversal of 83900249 is 94200938.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 69422224 + 14478025 = 8332^2 + 3805^2 .

It is a cyclic number.

It is not a de Polignac number, because 83900249 - 2²⁰ = 82851673 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (83900209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41950124 + 41950125.

It is an arithmetic number, because the mean of its divisors is an integer number (41950125).

Almost surely, 2^83900249 is an apocalyptic number.

It is an amenable number.

83900249 is a deficient number, since it is larger than the sum of its proper divisors (1).

83900249 is an equidigital number, since it uses as much as digits as its factorization.

83900249 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 83900249 is about 9159.7079101901. The cubic root of 83900249 is about 437.7784876182.

The spelling of 83900249 in words is "eighty-three million, nine hundred thousand, two hundred forty-nine".