126365889 has 32 divisors (see below), whose sum is σ = 189005824. Its totient is φ = 74571840.

The previous prime is 126365861. The next prime is 126365891. The reversal of 126365889 is 988563621.

It is a happy number.

It is not a de Polignac number, because 126365889 - 2⁹ = 126365377 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (126365809) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 153132 + ... + 153954.

It is an arithmetic number, because the mean of its divisors is an integer number (5906432).

Almost surely, 2^126365889 is an apocalyptic number.

It is an amenable number.

126365889 is a deficient number, since it is larger than the sum of its proper divisors (62639935).

126365889 is a wasteful number, since it uses less digits than its factorization.

126365889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 997.

The product of its digits is 622080, while the sum is 48.

The square root of 126365889 is about 11241.2583370368. The cubic root of 126365889 is about 501.8145918793.

The spelling of 126365889 in words is "one hundred twenty-six million, three hundred sixty-five thousand, eight hundred eighty-nine".