149806117 has 2 divisors, whose sum is σ = 149806118. Its totient is φ = 149806116.

The previous prime is 149806079. The next prime is 149806123. The reversal of 149806117 is 711608941.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 149793121 + 12996 = 12239^2 + 114^2 .

It is a cyclic number.

It is not a de Polignac number, because 149806117 - 2²⁷ = 15588389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (149806157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74903058 + 74903059.

It is an arithmetic number, because the mean of its divisors is an integer number (74903059).

Almost surely, 2^149806117 is an apocalyptic number.

It is an amenable number.

149806117 is a deficient number, since it is larger than the sum of its proper divisors (1).

149806117 is an equidigital number, since it uses as much as digits as its factorization.

149806117 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 37.

The square root of 149806117 is about 12239.5309142140. The cubic root of 149806117 is about 531.1002620757.

The spelling of 149806117 in words is "one hundred forty-nine million, eight hundred six thousand, one hundred seventeen".