1447972877 has 4 divisors (see below), whose sum is σ = 1559355420. Its totient is φ = 1336590336.

The previous prime is 1447972861. The next prime is 1447972907. The reversal of 1447972877 is 7782797441.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 670343881 + 777628996 = 25891^2 + 27886^2 .

It is a cyclic number.

It is not a de Polignac number, because 1447972877 - 2⁴ = 1447972861 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 (1447972777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55691252 + ... + 55691277.

It is an arithmetic number, because the mean of its divisors is an integer number (389838855).

Almost surely, 2^1447972877 is an apocalyptic number.

It is an amenable number.

1447972877 is a deficient number, since it is larger than the sum of its proper divisors (111382543).

1447972877 is a wasteful number, since it uses less digits than its factorization.

1447972877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111382542.

The product of its digits is 5531904, while the sum is 56.

The square root of 1447972877 is about 38052.2387909043. The cubic root of 1447972877 is about 1131.3235013362.

The spelling of 1447972877 in words is "one billion, four hundred forty-seven million, nine hundred seventy-two thousand, eight hundred seventy-seven".