149743969 has 4 divisors (see below), whose sum is σ = 149776900. Its totient is φ = 149711040.

The previous prime is 149743943. The next prime is 149743987. The reversal of 149743969 is 969347941.

149743969 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 84860944 + 64883025 = 9212^2 + 8055^2 .

It is a cyclic number.

It is not a de Polignac number, because 149743969 - 2¹³ = 149735777 is a prime.

It is a super-2 number, since 2×149743969² = 44846512503745922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (149743999) 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, 8292 + ... + 19189.

It is an arithmetic number, because the mean of its divisors is an integer number (37444225).

Almost surely, 2^149743969 is an apocalyptic number.

It is an amenable number.

149743969 is a deficient number, since it is larger than the sum of its proper divisors (32931).

149743969 is an equidigital number, since it uses as much as digits as its factorization.

149743969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32930.

The product of its digits is 1469664, while the sum is 52.

The square root of 149743969 is about 12236.9918280597. The cubic root of 149743969 is about 531.0268085008.

The spelling of 149743969 in words is "one hundred forty-nine million, seven hundred forty-three thousand, nine hundred sixty-nine".