139623299 has 2 divisors, whose sum is σ = 139623300. Its totient is φ = 139623298.

The previous prime is 139623277. The next prime is 139623389. The reversal of 139623299 is 992326931.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 139623299 - 2¹⁶ = 139557763 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (139623259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69811649 + 69811650.

It is an arithmetic number, because the mean of its divisors is an integer number (69811650).

Almost surely, 2^139623299 is an apocalyptic number.

139623299 is a deficient number, since it is larger than the sum of its proper divisors (1).

139623299 is an equidigital number, since it uses as much as digits as its factorization.

139623299 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 157464, while the sum is 44.

The square root of 139623299 is about 11816.2303210457. The cubic root of 139623299 is about 518.7832733484.

The spelling of 139623299 in words is "one hundred thirty-nine million, six hundred twenty-three thousand, two hundred ninety-nine".