672091139 has 2 divisors, whose sum is σ = 672091140. Its totient is φ = 672091138.

The previous prime is 672091103. The next prime is 672091159. The reversal of 672091139 is 931190276.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 672091139 - 2²⁸ = 403655683 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (672091159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 336045569 + 336045570.

It is an arithmetic number, because the mean of its divisors is an integer number (336045570).

Almost surely, 2^672091139 is an apocalyptic number.

672091139 is a deficient number, since it is larger than the sum of its proper divisors (1).

672091139 is an equidigital number, since it uses as much as digits as its factorization.

672091139 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20412, while the sum is 38.

The square root of 672091139 is about 25924.7206156595. The cubic root of 672091139 is about 875.9434239053.

The spelling of 672091139 in words is "six hundred seventy-two million, ninety-one thousand, one hundred thirty-nine".