1147199999 has 8 divisors (see below), whose sum is σ = 1275104592. Its totient is φ = 1023231040.

The previous prime is 1147199983. The next prime is 1147200007. The reversal of 1147199999 is 9999917411.

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 1147199999 - 2⁴ = 1147199983 is a prime.

It is a Duffinian number.

1147199999 is a modest number, since divided by 99999 gives 11471 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1147199909) 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, 983294 + ... + 984459.

It is an arithmetic number, because the mean of its divisors is an integer number (159388074).

Almost surely, 2^1147199999 is an apocalyptic number.

1147199999 is a deficient number, since it is larger than the sum of its proper divisors (127904593).

1147199999 is a wasteful number, since it uses less digits than its factorization.

1147199999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1967817.

The product of its digits is 1653372, while the sum is 59.

The square root of 1147199999 is about 33870.3409932643. The cubic root of 1147199999 is about 1046.8385630671.

The spelling of 1147199999 in words is "one billion, one hundred forty-seven million, one hundred ninety-nine thousand, nine hundred ninety-nine".