99912503 has 2 divisors, whose sum is σ = 99912504. Its totient is φ = 99912502.

The previous prime is 99912499. The next prime is 99912523. The reversal of 99912503 is 30521999.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 99912503 - 2² = 99912499 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99912523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49956251 + 49956252.

It is an arithmetic number, because the mean of its divisors is an integer number (49956252).

Almost surely, 2^99912503 is an apocalyptic number.

99912503 is a deficient number, since it is larger than the sum of its proper divisors (1).

99912503 is an equidigital number, since it uses as much as digits as its factorization.

99912503 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21870, while the sum is 38.

The square root of 99912503 is about 9995.6241926155. The cubic root of 99912503 is about 464.0234688263.

The spelling of 99912503 in words is "ninety-nine million, nine hundred twelve thousand, five hundred three".