83938997 has 2 divisors, whose sum is σ = 83938998. Its totient is φ = 83938996.

The previous prime is 83938993. The next prime is 83939057. The reversal of 83938997 is 79983938.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 57168721 + 26770276 = 7561^2 + 5174^2 .

It is a cyclic number.

It is not a de Polignac number, because 83938997 - 2² = 83938993 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83938993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41969498 + 41969499.

It is an arithmetic number, because the mean of its divisors is an integer number (41969499).

Almost surely, 2^83938997 is an apocalyptic number.

It is an amenable number.

83938997 is a deficient number, since it is larger than the sum of its proper divisors (1).

83938997 is an equidigital number, since it uses as much as digits as its factorization.

83938997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2939328, while the sum is 56.

The square root of 83938997 is about 9161.8227989849. The cubic root of 83938997 is about 437.8458709309.

The spelling of 83938997 in words is "eighty-three million, nine hundred thirty-eight thousand, nine hundred ninety-seven".