99251407 has 2 divisors, whose sum is σ = 99251408. Its totient is φ = 99251406.

The previous prime is 99251401. The next prime is 99251419. The reversal of 99251407 is 70415299.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 99251407 - 2²³ = 90862799 is a prime.

It is the 9963-rd Hogben number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99251401) by changing a digit.

It is a nontrivial repunit in base 9962.

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, 49625703 + 49625704.

It is an arithmetic number, because the mean of its divisors is an integer number (49625704).

Almost surely, 2^99251407 is an apocalyptic number.

99251407 is a deficient number, since it is larger than the sum of its proper divisors (1).

99251407 is an equidigital number, since it uses as much as digits as its factorization.

99251407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22680, while the sum is 37.

The square root of 99251407 is about 9962.5000376412. The cubic root of 99251407 is about 462.9977608594.

The spelling of 99251407 in words is "ninety-nine million, two hundred fifty-one thousand, four hundred seven".