126862889 has 4 divisors (see below), whose sum is σ = 127831440. Its totient is φ = 125894340.

The previous prime is 126862837. The next prime is 126862919. The reversal of 126862889 is 988268621.

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.

It is a cyclic number.

It is not a de Polignac number, because 126862889 - 2¹² = 126858793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126865889) 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, 484079 + ... + 484340.

It is an arithmetic number, because the mean of its divisors is an integer number (31957860).

Almost surely, 2^126862889 is an apocalyptic number.

It is an amenable number.

126862889 is a deficient number, since it is larger than the sum of its proper divisors (968551).

126862889 is an equidigital number, since it uses as much as digits as its factorization.

126862889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 968550.

The product of its digits is 663552, while the sum is 50.

The square root of 126862889 is about 11263.3427098708. The cubic root of 126862889 is about 502.4716141156.

The spelling of 126862889 in words is "one hundred twenty-six million, eight hundred sixty-two thousand, eight hundred eighty-nine".