149456169 has 12 divisors (see below), whose sum is σ = 223325700. Its totient is φ = 96201504.

The previous prime is 149456137. The next prime is 149456171. The reversal of 149456169 is 961654941.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 93026025 + 56430144 = 9645^2 + 7512^2 .

It is not a de Polignac number, because 149456169 - 2⁵ = 149456137 is a prime.

It is a super-2 number, since 2×149456169² = 44674292904313122, which contains 22 as substring.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

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

It is not an unprimeable number, because it can be changed into a prime (149456189) by changing a digit.

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

It is an upside-down number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 286054 + ... + 286575.

It is an arithmetic number, because the mean of its divisors is an integer number (18610475).

Almost surely, 2^149456169 is an apocalyptic number.

It is an amenable number.

149456169 is a deficient number, since it is larger than the sum of its proper divisors (73869531).

149456169 is a wasteful number, since it uses less digits than its factorization.

149456169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 572664 (or 572661 counting only the distinct ones).

The product of its digits is 233280, while the sum is 45.

The square root of 149456169 is about 12225.2267463634. The cubic root of 149456169 is about 530.6863884909.

The spelling of 149456169 in words is "one hundred forty-nine million, four hundred fifty-six thousand, one hundred sixty-nine".