149459665 has 16 divisors (see below), whose sum is σ = 191192400. Its totient is φ = 111769600.

The previous prime is 149459659. The next prime is 149459669. The reversal of 149459665 is 566954941.

It can be written as a sum of positive squares in 8 ways, for example, as 2347024 + 147112641 = 1532^2 + 12129^2 .

It is not a de Polignac number, because 149459665 - 2³ = 149459657 is a prime.

It is not an unprimeable number, because it can be changed into a prime (149459669) 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, 6765 + ... + 18565.

It is an arithmetic number, because the mean of its divisors is an integer number (11949525).

Almost surely, 2^149459665 is an apocalyptic number.

It is an amenable number.

149459665 is a deficient number, since it is larger than the sum of its proper divisors (41732735).

149459665 is a wasteful number, since it uses less digits than its factorization.

149459665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11972.

The product of its digits is 1166400, while the sum is 49.

The square root of 149459665 is about 12225.3697285604. The cubic root of 149459665 is about 530.6905263041.

The spelling of 149459665 in words is "one hundred forty-nine million, four hundred fifty-nine thousand, six hundred sixty-five".