149269717 has 2 divisors, whose sum is σ = 149269718. Its totient is φ = 149269716.

The previous prime is 149269709. The next prime is 149269787. The reversal of 149269717 is 717962941.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 148693636 + 576081 = 12194^2 + 759^2 .

It is a cyclic number.

It is not a de Polignac number, because 149269717 - 2³ = 149269709 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (149269787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74634858 + 74634859.

It is an arithmetic number, because the mean of its divisors is an integer number (74634859).

Almost surely, 2^149269717 is an apocalyptic number.

It is an amenable number.

149269717 is a deficient number, since it is larger than the sum of its proper divisors (1).

149269717 is an equidigital number, since it uses as much as digits as its factorization.

149269717 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 190512, while the sum is 46.

The square root of 149269717 is about 12217.5986593111. The cubic root of 149269717 is about 530.4656131412.

The spelling of 149269717 in words is "one hundred forty-nine million, two hundred sixty-nine thousand, seven hundred seventeen".