1427999911 has 8 divisors (see below), whose sum is σ = 1538169584. Its totient is φ = 1317876480.

The previous prime is 1427999899. The next prime is 1427999957. The reversal of 1427999911 is 1199997241.

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 1427999911 - 2⁹ = 1427999399 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1427999981) 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, 78775 + ... + 95191.

It is an arithmetic number, because the mean of its divisors is an integer number (192271198).

Almost surely, 2^1427999911 is an apocalyptic number.

1427999911 is a deficient number, since it is larger than the sum of its proper divisors (110169673).

1427999911 is a wasteful number, since it uses less digits than its factorization.

1427999911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23121.

The product of its digits is 367416, while the sum is 52.

The square root of 1427999911 is about 37788.8860777875. The cubic root of 1427999911 is about 1126.0976706383.

The spelling of 1427999911 in words is "one billion, four hundred twenty-seven million, nine hundred ninety-nine thousand, nine hundred eleven".