1240479663 has 16 divisors (see below), whose sum is σ = 1708262400. Its totient is φ = 799871040.

The previous prime is 1240479659. The next prime is 1240479679. The reversal of 1240479663 is 3669740421.

It is not a de Polignac number, because 1240479663 - 2² = 1240479659 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1240479463) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 327243 + ... + 331011.

It is an arithmetic number, because the mean of its divisors is an integer number (106766400).

Almost surely, 2^1240479663 is an apocalyptic number.

1240479663 is a deficient number, since it is larger than the sum of its proper divisors (467782737).

1240479663 is a wasteful number, since it uses less digits than its factorization.

1240479663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7342.

The product of its (nonzero) digits is 217728, while the sum is 42.

The square root of 1240479663 is about 35220.4438217351. The cubic root of 1240479663 is about 1074.4755799434.

The spelling of 1240479663 in words is "one billion, two hundred forty million, four hundred seventy-nine thousand, six hundred sixty-three".