99019447 has 2 divisors, whose sum is σ = 99019448. Its totient is φ = 99019446.

The previous prime is 99019433. The next prime is 99019483. The reversal of 99019447 is 74491099.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99019447 is a prime.

It is a super-4 number, since 4×99019447⁴ (a number of 33 digits) contains 4444 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99019147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49509723 + 49509724.

It is an arithmetic number, because the mean of its divisors is an integer number (49509724).

Almost surely, 2^99019447 is an apocalyptic number.

99019447 is a deficient number, since it is larger than the sum of its proper divisors (1).

99019447 is an equidigital number, since it uses as much as digits as its factorization.

99019447 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 81648, while the sum is 43.

The square root of 99019447 is about 9950.8515715993. The cubic root of 99019447 is about 462.6367895365.

The spelling of 99019447 in words is "ninety-nine million, nineteen thousand, four hundred forty-seven".