149705973 has 12 divisors (see below), whose sum is σ = 220322700. Its totient is φ = 97920576.

The previous prime is 149705971. The next prime is 149705987. The reversal of 149705973 is 379507941.

It can be written as a sum of positive squares in 2 ways, for example, as 128527569 + 21178404 = 11337^2 + 4602^2 .

It is not a de Polignac number, because 149705973 - 2¹ = 149705971 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149705971) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 156448 + ... + 157401.

It is an arithmetic number, because the mean of its divisors is an integer number (18360225).

Almost surely, 2^149705973 is an apocalyptic number.

It is an amenable number.

149705973 is a deficient number, since it is larger than the sum of its proper divisors (70616727).

149705973 is a wasteful number, since it uses less digits than its factorization.

149705973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313908 (or 313905 counting only the distinct ones).

The product of its (nonzero) digits is 238140, while the sum is 45.

The square root of 149705973 is about 12235.4392238285. The cubic root of 149705973 is about 530.9818904950.

The spelling of 149705973 in words is "one hundred forty-nine million, seven hundred five thousand, nine hundred seventy-three".