1243769904 has 100 divisors (see below), whose sum is σ = 3876793536. Its totient is φ = 382693248.

The previous prime is 1243769881. The next prime is 1243769939. The reversal of 1243769904 is 4099673421.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1243769904.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 20064 + ... + 53759.

Almost surely, 2^1243769904 is an apocalyptic number.

It is an amenable number.

1243769904 is an abundant number, since it is smaller than the sum of its proper divisors (2633023632).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1243769904 is a wasteful number, since it uses less digits than its factorization.

1243769904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73856 (or 73841 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 45.

The square root of 1243769904 is about 35267.1221394658. The cubic root of 1243769904 is about 1075.4247188544.

The spelling of 1243769904 in words is "one billion, two hundred forty-three million, seven hundred sixty-nine thousand, nine hundred four".