1234999447 has 6 divisors (see below), whose sum is σ = 1357478864. Its totient is φ = 1122726660.

The previous prime is 1234999433. The next prime is 1234999471. The reversal of 1234999447 is 7449994321.

It is not a de Polignac number, because 1234999447 - 2¹⁵ = 1234966679 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1234999394 and 1234999403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1234999477) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5103183 + ... + 5103424.

Almost surely, 2^1234999447 is an apocalyptic number.

1234999447 is a deficient number, since it is larger than the sum of its proper divisors (122479417).

1234999447 is a wasteful number, since it uses less digits than its factorization.

1234999447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10206629 (or 10206618 counting only the distinct ones).

The product of its digits is 1959552, while the sum is 52.

The square root of 1234999447 is about 35142.5589136591. The cubic root of 1234999447 is about 1072.8909641904.

The spelling of 1234999447 in words is "one billion, two hundred thirty-four million, nine hundred ninety-nine thousand, four hundred forty-seven".