1240093889 has 4 divisors (see below), whose sum is σ = 1255791360. Its totient is φ = 1224396420.

The previous prime is 1240093879. The next prime is 1240093903. The reversal of 1240093889 is 9883900421.

It is a happy number.

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 1240093889 - 2⁴ = 1240093873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1240093819) 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, 7848617 + ... + 7848774.

It is an arithmetic number, because the mean of its divisors is an integer number (313947840).

Almost surely, 2^1240093889 is an apocalyptic number.

It is an amenable number.

1240093889 is a deficient number, since it is larger than the sum of its proper divisors (15697471).

1240093889 is an equidigital number, since it uses as much as digits as its factorization.

1240093889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15697470.

The product of its (nonzero) digits is 124416, while the sum is 44.

The square root of 1240093889 is about 35214.9668323002. The cubic root of 1240093889 is about 1074.3641854749.

The spelling of 1240093889 in words is "one billion, two hundred forty million, ninety-three thousand, eight hundred eighty-nine".