1217940476 has 12 divisors (see below), whose sum is σ = 2139691008. Its totient is φ = 606600192.

The previous prime is 1217940473. The next prime is 1217940491. The reversal of 1217940476 is 6740497121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1217940473) 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, 591356 + ... + 593411.

It is an arithmetic number, because the mean of its divisors is an integer number (178307584).

Almost surely, 2^1217940476 is an apocalyptic number.

It is an amenable number.

1217940476 is a deficient number, since it is larger than the sum of its proper divisors (921750532).

1217940476 is a wasteful number, since it uses less digits than its factorization.

1217940476 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1185028 (or 1185026 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 41.

The square root of 1217940476 is about 34899.0039399408. The cubic root of 1217940476 is about 1067.9281175465.

The spelling of 1217940476 in words is "one billion, two hundred seventeen million, nine hundred forty thousand, four hundred seventy-six".