149173117 has 2 divisors, whose sum is σ = 149173118. Its totient is φ = 149173116.

The previous prime is 149173103. The next prime is 149173133. The reversal of 149173117 is 711371941.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 104162436 + 45010681 = 10206^2 + 6709^2 .

It is a cyclic number.

It is not a de Polignac number, because 149173117 - 2¹¹ = 149171069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (149170117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74586558 + 74586559.

It is an arithmetic number, because the mean of its divisors is an integer number (74586559).

Almost surely, 2^149173117 is an apocalyptic number.

It is an amenable number.

149173117 is a deficient number, since it is larger than the sum of its proper divisors (1).

149173117 is an equidigital number, since it uses as much as digits as its factorization.

149173117 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5292, while the sum is 34.

The square root of 149173117 is about 12213.6447058198. The cubic root of 149173117 is about 530.3511580523.

The spelling of 149173117 in words is "one hundred forty-nine million, one hundred seventy-three thousand, one hundred seventeen".