99957437 has 2 divisors, whose sum is σ = 99957438. Its totient is φ = 99957436.

The previous prime is 99957419. The next prime is 99957443. The reversal of 99957437 is 73475999.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 99580441 + 376996 = 9979^2 + 614^2 .

It is a cyclic number.

It is not a de Polignac number, because 99957437 - 2⁶ = 99957373 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99957337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49978718 + 49978719.

It is an arithmetic number, because the mean of its divisors is an integer number (49978719).

Almost surely, 2^99957437 is an apocalyptic number.

It is an amenable number.

99957437 is a deficient number, since it is larger than the sum of its proper divisors (1).

99957437 is an equidigital number, since it uses as much as digits as its factorization.

99957437 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2143260, while the sum is 53.

The square root of 99957437 is about 9997.8716235007. The cubic root of 99957437 is about 464.0930207008.

The spelling of 99957437 in words is "ninety-nine million, nine hundred fifty-seven thousand, four hundred thirty-seven".