149488469 has 4 divisors (see below), whose sum is σ = 160987596. Its totient is φ = 137989344.

The previous prime is 149488459. The next prime is 149488483. The reversal of 149488469 is 964884941.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 964884941 = 16843 ⋅57287.

It can be written as a sum of positive squares in 2 ways, for example, as 65399569 + 84088900 = 8087^2 + 9170^2 .

It is a cyclic number.

It is not a de Polignac number, because 149488469 - 2¹² = 149484373 is a prime.

It is a super-2 number, since 2×149488469² = 44693604727927922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 149488469.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149488459) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5749544 + ... + 5749569.

It is an arithmetic number, because the mean of its divisors is an integer number (40246899).

Almost surely, 2^149488469 is an apocalyptic number.

It is an amenable number.

149488469 is a deficient number, since it is larger than the sum of its proper divisors (11499127).

149488469 is a wasteful number, since it uses less digits than its factorization.

149488469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11499126.

The product of its digits is 1990656, while the sum is 53.

The square root of 149488469 is about 12226.5477138888. The cubic root of 149488469 is about 530.7246158315.

The spelling of 149488469 in words is "one hundred forty-nine million, four hundred eighty-eight thousand, four hundred sixty-nine".