149253469 has 4 divisors (see below), whose sum is σ = 149873020. Its totient is φ = 148633920.

The previous prime is 149253443. The next prime is 149253487. The reversal of 149253469 is 964352941.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 108930969 + 40322500 = 10437^2 + 6350^2 .

It is a cyclic number.

It is not a de Polignac number, because 149253469 - 2¹³ = 149245277 is a prime.

It is a super-2 number, since 2×149253469² = 44553196017067922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149251469) 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, 309414 + ... + 309895.

It is an arithmetic number, because the mean of its divisors is an integer number (37468255).

Almost surely, 2^149253469 is an apocalyptic number.

It is an amenable number.

149253469 is a deficient number, since it is larger than the sum of its proper divisors (619551).

149253469 is an equidigital number, since it uses as much as digits as its factorization.

149253469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 619550.

The product of its digits is 233280, while the sum is 43.

The square root of 149253469 is about 12216.9336987642. The cubic root of 149253469 is about 530.4463653924.

The spelling of 149253469 in words is "one hundred forty-nine million, two hundred fifty-three thousand, four hundred sixty-nine".