149247969 has 16 divisors (see below), whose sum is σ = 219291072. Its totient is φ = 89707968.

The previous prime is 149247953. The next prime is 149247971. The reversal of 149247969 is 969742941.

It is a happy number.

It is not a de Polignac number, because 149247969 - 2⁴ = 149247953 is a prime.

It is a super-2 number, since 2×149247969² = 44549912501249922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (149247929) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42822 + ... + 46175.

It is an arithmetic number, because the mean of its divisors is an integer number (13705692).

Almost surely, 2^149247969 is an apocalyptic number.

It is an amenable number.

149247969 is a deficient number, since it is larger than the sum of its proper divisors (70043103).

149247969 is a wasteful number, since it uses less digits than its factorization.

149247969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89056.

The product of its digits is 979776, while the sum is 51.

The square root of 149247969 is about 12216.7085992914. The cubic root of 149247969 is about 530.4398496514.

The spelling of 149247969 in words is "one hundred forty-nine million, two hundred forty-seven thousand, nine hundred sixty-nine".