149272769 has 4 divisors (see below), whose sum is σ = 149431344. Its totient is φ = 149114196.

The previous prime is 149272727. The next prime is 149272777. The reversal of 149272769 is 967272941.

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 a de Polignac number, because none of the positive numbers 2^k-149272769 is a prime.

It is a super-2 number, since 2×149272769² = 44564719129854722, which contains 22 as substring.

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

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (149272789) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77867 + ... + 79760.

It is an arithmetic number, because the mean of its divisors is an integer number (37357836).

Almost surely, 2^149272769 is an apocalyptic number.

It is an amenable number.

149272769 is a deficient number, since it is larger than the sum of its proper divisors (158575).

149272769 is an equidigital number, since it uses as much as digits as its factorization.

149272769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158574.

The product of its digits is 381024, while the sum is 47.

The square root of 149272769 is about 12217.7235604674. The cubic root of 149272769 is about 530.4692284537.

The spelling of 149272769 in words is "one hundred forty-nine million, two hundred seventy-two thousand, seven hundred sixty-nine".