149127569 has 16 divisors (see below), whose sum is σ = 157462272. Its totient is φ = 141082368.

The previous prime is 149127551. The next prime is 149127571. The reversal of 149127569 is 965721941.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-149127569 is a prime.

It is a super-2 number, since 2×149127569² = 44478063671699522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (149147569) 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 15 ways as a sum of consecutive naturals, for example, 228047 + ... + 228699.

It is an arithmetic number, because the mean of its divisors is an integer number (9841392).

Almost surely, 2^149127569 is an apocalyptic number.

It is an amenable number.

149127569 is a deficient number, since it is larger than the sum of its proper divisors (8334703).

149127569 is a wasteful number, since it uses less digits than its factorization.

149127569 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 856.

The product of its digits is 136080, while the sum is 44.

The square root of 149127569 is about 12211.7799275945. The cubic root of 149127569 is about 530.2971740323.

The spelling of 149127569 in words is "one hundred forty-nine million, one hundred twenty-seven thousand, five hundred sixty-nine".