149865629 has 2 divisors, whose sum is σ = 149865630. Its totient is φ = 149865628.

The previous prime is 149865581. The next prime is 149865641. The reversal of 149865629 is 926568941.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 118483225 + 31382404 = 10885^2 + 5602^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-149865629 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (149865689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74932814 + 74932815.

It is an arithmetic number, because the mean of its divisors is an integer number (74932815).

Almost surely, 2^149865629 is an apocalyptic number.

It is an amenable number.

149865629 is a deficient number, since it is larger than the sum of its proper divisors (1).

149865629 is an equidigital number, since it uses as much as digits as its factorization.

149865629 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 933120, while the sum is 50.

The square root of 149865629 is about 12241.9618117359. The cubic root of 149865629 is about 531.1705810875.

The spelling of 149865629 in words is "one hundred forty-nine million, eight hundred sixty-five thousand, six hundred twenty-nine".