15401889 has 12 divisors (see below), whose sum is σ = 22312576. Its totient is φ = 10237752.

The previous prime is 15401873. The next prime is 15401917. The reversal of 15401889 is 98810451.

It is not a de Polignac number, because 15401889 - 2⁴ = 15401873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15401819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 972 + ... + 5634.

Almost surely, 2^15401889 is an apocalyptic number.

It is an amenable number.

15401889 is a deficient number, since it is larger than the sum of its proper divisors (6910687).

15401889 is a wasteful number, since it uses less digits than its factorization.

15401889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5036 (or 5033 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 36.

The square root of 15401889 is about 3924.5240475757. The cubic root of 15401889 is about 248.8043656161.

It can be divided in two parts, 15401 and 889, that added together give a triangular number (16290 = T₁₈₀).

The spelling of 15401889 in words is "fifteen million, four hundred one thousand, eight hundred eighty-nine".