1399454547 has 4 divisors (see below), whose sum is σ = 1865939400. Its totient is φ = 932969696.

The previous prime is 1399454521. The next prime is 1399454549. The reversal of 1399454547 is 7454549931.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1399454547 - 2¹⁴ = 1399438163 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1399454547.

It is not an unprimeable number, because it can be changed into a prime (1399454549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 233242422 + ... + 233242427.

It is an arithmetic number, because the mean of its divisors is an integer number (466484850).

Almost surely, 2^1399454547 is an apocalyptic number.

1399454547 is a deficient number, since it is larger than the sum of its proper divisors (466484853).

1399454547 is an equidigital number, since it uses as much as digits as its factorization.

1399454547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 466484852.

The product of its digits is 2721600, while the sum is 51.

The square root of 1399454547 is about 37409.2842353339. The cubic root of 1399454547 is about 1118.5436393428.

The spelling of 1399454547 in words is "one billion, three hundred ninety-nine million, four hundred fifty-four thousand, five hundred forty-seven".