149072317 has 2 divisors, whose sum is σ = 149072318. Its totient is φ = 149072316.

The previous prime is 149072281. The next prime is 149072327. The reversal of 149072317 is 713270941.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 148376761 + 695556 = 12181^2 + 834^2 .

It is a cyclic number.

It is not a de Polignac number, because 149072317 - 2¹¹ = 149070269 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (149072327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74536158 + 74536159.

It is an arithmetic number, because the mean of its divisors is an integer number (74536159).

Almost surely, 2^149072317 is an apocalyptic number.

It is an amenable number.

149072317 is a deficient number, since it is larger than the sum of its proper divisors (1).

149072317 is an equidigital number, since it uses as much as digits as its factorization.

149072317 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10584, while the sum is 34.

The square root of 149072317 is about 12209.5174761331. The cubic root of 149072317 is about 530.2316739620.

The spelling of 149072317 in words is "one hundred forty-nine million, seventy-two thousand, three hundred seventeen".