199424623 has 2 divisors, whose sum is σ = 199424624. Its totient is φ = 199424622.

The previous prime is 199424611. The next prime is 199424639. The reversal of 199424623 is 326424991.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 199424623 - 2⁵ = 199424591 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (199424683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99712311 + 99712312.

It is an arithmetic number, because the mean of its divisors is an integer number (99712312).

Almost surely, 2^199424623 is an apocalyptic number.

199424623 is a deficient number, since it is larger than the sum of its proper divisors (1).

199424623 is an equidigital number, since it uses as much as digits as its factorization.

199424623 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 93312, while the sum is 40.

The square root of 199424623 is about 14121.7783228600. The cubic root of 199424623 is about 584.2422048070.

The spelling of 199424623 in words is "one hundred ninety-nine million, four hundred twenty-four thousand, six hundred twenty-three".