128850349 has 4 divisors (see below), whose sum is σ = 128880640. Its totient is φ = 128820060.

The previous prime is 128850341. The next prime is 128850377. The reversal of 128850349 is 943058821.

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, and also an emirpimes, since its reverse is a distinct semiprime: 943058821 = 10597 ⋅88993.

It is a cyclic number.

It is not a de Polignac number, because 128850349 - 2³ = 128850341 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128850341) 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, 7467 + ... + 17704.

It is an arithmetic number, because the mean of its divisors is an integer number (32220160).

Almost surely, 2^128850349 is an apocalyptic number.

It is an amenable number.

128850349 is a deficient number, since it is larger than the sum of its proper divisors (30291).

128850349 is an equidigital number, since it uses as much as digits as its factorization.

128850349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30290.

The product of its (nonzero) digits is 69120, while the sum is 40.

The square root of 128850349 is about 11351.2267618967. The cubic root of 128850349 is about 505.0819708131.

The spelling of 128850349 in words is "one hundred twenty-eight million, eight hundred fifty thousand, three hundred forty-nine".