99670019 has 2 divisors, whose sum is σ = 99670020. Its totient is φ = 99670018.

The previous prime is 99669989. The next prime is 99670027. The reversal of 99670019 is 91007699.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (91007699) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99670019 is a prime.

It is a super-2 number, since 2×99670019² = 19868225374920722, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (99670079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49835009 + 49835010.

It is an arithmetic number, because the mean of its divisors is an integer number (49835010).

Almost surely, 2^99670019 is an apocalyptic number.

99670019 is a deficient number, since it is larger than the sum of its proper divisors (1).

99670019 is an equidigital number, since it uses as much as digits as its factorization.

99670019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30618, while the sum is 41.

The square root of 99670019 is about 9983.4873165643. The cubic root of 99670019 is about 463.6477753870.

The spelling of 99670019 in words is "ninety-nine million, six hundred seventy thousand, nineteen".