149956289 has 4 divisors (see below), whose sum is σ = 171378624. Its totient is φ = 128533956.

The previous prime is 149956283. The next prime is 149956291. The reversal of 149956289 is 982659941.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 149956289 - 2⁸ = 149956033 is a prime.

It is a super-2 number, since 2×149956289² = 44973777221303042, 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 149956289.

It is not an unprimeable number, because it can be changed into a prime (149956283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10711157 + ... + 10711170.

It is an arithmetic number, because the mean of its divisors is an integer number (42844656).

Almost surely, 2^149956289 is an apocalyptic number.

It is an amenable number.

149956289 is a deficient number, since it is larger than the sum of its proper divisors (21422335).

149956289 is an equidigital number, since it uses as much as digits as its factorization.

149956289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21422334.

The product of its digits is 1399680, while the sum is 53.

The square root of 149956289 is about 12245.6640897911. The cubic root of 149956289 is about 531.2776686120.

The spelling of 149956289 in words is "one hundred forty-nine million, nine hundred fifty-six thousand, two hundred eighty-nine".