149490965 has 16 divisors (see below), whose sum is σ = 193445616. Its totient is φ = 110246400.

The previous prime is 149490947. The next prime is 149490967. The reversal of 149490965 is 569094941.

It can be written as a sum of positive squares in 8 ways, for example, as 21325924 + 128165041 = 4618^2 + 11321^2 .

It is not a de Polignac number, because 149490965 - 2¹⁰ = 149489941 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149490967) 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, 84995 + ... + 86735.

It is an arithmetic number, because the mean of its divisors is an integer number (12090351).

Almost surely, 2^149490965 is an apocalyptic number.

It is an amenable number.

149490965 is a deficient number, since it is larger than the sum of its proper divisors (43954651).

149490965 is a wasteful number, since it uses less digits than its factorization.

149490965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3080.

The product of its (nonzero) digits is 349920, while the sum is 47.

The square root of 149490965 is about 12226.6497864296. The cubic root of 149490965 is about 530.7275696408.

The spelling of 149490965 in words is "one hundred forty-nine million, four hundred ninety thousand, nine hundred sixty-five".