772139 has 2 divisors, whose sum is σ = 772140. Its totient is φ = 772138.

The previous prime is 772127. The next prime is 772147. The reversal of 772139 is 931277.

It is a happy number.

772139 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 772139 - 2¹⁶ = 706603 is a prime.

It is a Chen prime.

It is equal to p₆₁₈₉₅ and since 772139 and 61895 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (772159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 386069 + 386070.

It is an arithmetic number, because the mean of its divisors is an integer number (386070).

2⁷⁷²¹³⁹ is an apocalyptic number.

772139 is a deficient number, since it is larger than the sum of its proper divisors (1).

772139 is an equidigital number, since it uses as much as digits as its factorization.

772139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2646, while the sum is 29.

The square root of 772139 is about 878.7144018394. The cubic root of 772139 is about 91.7413576735.

The spelling of 772139 in words is "seven hundred seventy-two thousand, one hundred thirty-nine".