99431413 has 2 divisors, whose sum is σ = 99431414. Its totient is φ = 99431412.

The previous prime is 99431411. The next prime is 99431443. The reversal of 99431413 is 31413499.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 75047569 + 24383844 = 8663^2 + 4938^2 .

It is a cyclic number.

It is not a de Polignac number, because 99431413 - 2¹ = 99431411 is a prime.

Together with 99431411, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99431411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49715706 + 49715707.

It is an arithmetic number, because the mean of its divisors is an integer number (49715707).

Almost surely, 2^99431413 is an apocalyptic number.

It is an amenable number.

99431413 is a deficient number, since it is larger than the sum of its proper divisors (1).

99431413 is an equidigital number, since it uses as much as digits as its factorization.

99431413 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11664, while the sum is 34.

The square root of 99431413 is about 9971.5301233061. The cubic root of 99431413 is about 463.2774950681.

The spelling of 99431413 in words is "ninety-nine million, four hundred thirty-one thousand, four hundred thirteen".