149717 has 2 divisors, whose sum is σ = 149718. Its totient is φ = 149716.

The previous prime is 149713. The next prime is 149729. The reversal of 149717 is 717941.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 78961 + 70756 = 281^2 + 266^2 .

It is a cyclic number.

It is not a de Polignac number, because 149717 - 2² = 149713 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 149717.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (149711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74858 + 74859.

It is an arithmetic number, because the mean of its divisors is an integer number (74859).

2¹⁴⁹⁷¹⁷ is an apocalyptic number.

It is an amenable number.

149717 is a deficient number, since it is larger than the sum of its proper divisors (1).

149717 is an equidigital number, since it uses as much as digits as its factorization.

149717 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1764, while the sum is 29.

The square root of 149717 is about 386.9328107049. The cubic root of 149717 is about 53.0994927146.

The spelling of 149717 in words is "one hundred forty-nine thousand, seven hundred seventeen".