149256789 has 8 divisors (see below), whose sum is σ = 217100832. Its totient is φ = 90458640.

The previous prime is 149256781. The next prime is 149256791. The reversal of 149256789 is 987652941.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 149256789 - 2³ = 149256781 is a prime.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149256781) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2261434 + ... + 2261499.

It is an arithmetic number, because the mean of its divisors is an integer number (27137604).

Almost surely, 2^149256789 is an apocalyptic number.

It is an amenable number.

149256789 is a deficient number, since it is larger than the sum of its proper divisors (67844043).

149256789 is a wasteful number, since it uses less digits than its factorization.

149256789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4522947.

The product of its digits is 1088640, while the sum is 51.

The square root of 149256789 is about 12217.0695749840. The cubic root of 149256789 is about 530.4502984531.

The spelling of 149256789 in words is "one hundred forty-nine million, two hundred fifty-six thousand, seven hundred eighty-nine".