1240480689 has 64 divisors (see below), whose sum is σ = 2036441088. Its totient is φ = 656409600.

The previous prime is 1240480621. The next prime is 1240480753. The reversal of 1240480689 is 9860840421.

It is not a de Polignac number, because 1240480689 - 2²⁰ = 1239432113 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1240480689.

It is not an unprimeable number, because it can be changed into a prime (1240480609) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2091577 + ... + 2092169.

It is an arithmetic number, because the mean of its divisors is an integer number (31819392).

Almost surely, 2^1240480689 is an apocalyptic number.

It is an amenable number.

1240480689 is a deficient number, since it is larger than the sum of its proper divisors (795960399).

1240480689 is a wasteful number, since it uses less digits than its factorization.

1240480689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 758.

The product of its (nonzero) digits is 110592, while the sum is 42.

The square root of 1240480689 is about 35220.4583871363. The cubic root of 1240480689 is about 1074.4758761760.

The spelling of 1240480689 in words is "one billion, two hundred forty million, four hundred eighty thousand, six hundred eighty-nine".