149729177 has 16 divisors (see below), whose sum is σ = 170170560. Its totient is φ = 130600512.

The previous prime is 149729159. The next prime is 149729179. The reversal of 149729177 is 771927941.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 149729177 - 2⁸ = 149728921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (149729179) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 180638 + ... + 181464.

It is an arithmetic number, because the mean of its divisors is an integer number (10635660).

Almost surely, 2^149729177 is an apocalyptic number.

It is an amenable number.

149729177 is a deficient number, since it is larger than the sum of its proper divisors (20441383).

149729177 is a wasteful number, since it uses less digits than its factorization.

149729177 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1592.

The product of its digits is 222264, while the sum is 47.

The square root of 149729177 is about 12236.3874162271. The cubic root of 149729177 is about 531.0093226386.

The spelling of 149729177 in words is "one hundred forty-nine million, seven hundred twenty-nine thousand, one hundred seventy-seven".