99957449 has 2 divisors, whose sum is σ = 99957450. Its totient is φ = 99957448.

The previous prime is 99957443. The next prime is 99957463. The reversal of 99957449 is 94475999.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 89113600 + 10843849 = 9440^2 + 3293^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99957449 is a prime.

It is a super-2 number, since 2×99957449² = 19982983221175202, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 99957394 and 99957403.

It is not a weakly prime, because it can be changed into another prime (99957443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49978724 + 49978725.

It is an arithmetic number, because the mean of its divisors is an integer number (49978725).

Almost surely, 2^99957449 is an apocalyptic number.

It is an amenable number.

99957449 is a deficient number, since it is larger than the sum of its proper divisors (1).

99957449 is an equidigital number, since it uses as much as digits as its factorization.

99957449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3674160, while the sum is 56.

The square root of 99957449 is about 9997.8722236284. The cubic root of 99957449 is about 464.0930392725.

The spelling of 99957449 in words is "ninety-nine million, nine hundred fifty-seven thousand, four hundred forty-nine".