99957419 has 2 divisors, whose sum is σ = 99957420. Its totient is φ = 99957418.

The previous prime is 99957409. The next prime is 99957437. The reversal of 99957419 is 91475999.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99957419 is a prime.

It is a super-2 number, since 2×99957419² = 19982971226283122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (99957409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49978709 + 49978710.

It is an arithmetic number, because the mean of its divisors is an integer number (49978710).

Almost surely, 2^99957419 is an apocalyptic number.

99957419 is a deficient number, since it is larger than the sum of its proper divisors (1).

99957419 is an equidigital number, since it uses as much as digits as its factorization.

99957419 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 918540, while the sum is 53.

The square root of 99957419 is about 9997.8707233090. The cubic root of 99957419 is about 464.0929928434.

The spelling of 99957419 in words is "ninety-nine million, nine hundred fifty-seven thousand, four hundred nineteen".