1240080439 has 8 divisors (see below), whose sum is σ = 1336234032. Its totient is φ = 1144035840.

The previous prime is 1240080437. The next prime is 1240080449. The reversal of 1240080439 is 9340800421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1240080439 - 2¹ = 1240080437 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1240080439.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1240080431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2794 + ... + 49879.

It is an arithmetic number, because the mean of its divisors is an integer number (167029254).

Almost surely, 2^1240080439 is an apocalyptic number.

1240080439 is a deficient number, since it is larger than the sum of its proper divisors (96153593).

1240080439 is a wasteful number, since it uses less digits than its factorization.

1240080439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54497.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 1240080439 is about 35214.7758618453. The cubic root of 1240080439 is about 1074.3603012930.

The spelling of 1240080439 in words is "one billion, two hundred forty million, eighty thousand, four hundred thirty-nine".