83823997 has 2 divisors, whose sum is σ = 83823998. Its totient is φ = 83823996.

The previous prime is 83823989. The next prime is 83824001. The reversal of 83823997 is 79932838.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 73513476 + 10310521 = 8574^2 + 3211^2 .

It is a cyclic number.

It is not a de Polignac number, because 83823997 - 2³ = 83823989 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 83823997.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83823947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41911998 + 41911999.

It is an arithmetic number, because the mean of its divisors is an integer number (41911999).

Almost surely, 2^83823997 is an apocalyptic number.

It is an amenable number.

83823997 is a deficient number, since it is larger than the sum of its proper divisors (1).

83823997 is an equidigital number, since it uses as much as digits as its factorization.

83823997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 653184, while the sum is 49.

The square root of 83823997 is about 9155.5446042275. The cubic root of 83823997 is about 437.6458237164.

The spelling of 83823997 in words is "eighty-three million, eight hundred twenty-three thousand, nine hundred ninety-seven".