1398266347 has 4 divisors (see below), whose sum is σ = 1459060560. Its totient is φ = 1337472136.

The previous prime is 1398266341. The next prime is 1398266351. The reversal of 1398266347 is 7436628931.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7436628931 = 137 ⋅54281963.

It is a cyclic number.

It is not a de Polignac number, because 1398266347 - 2²⁷ = 1264048619 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1398266347.

It is not an unprimeable number, because it can be changed into a prime (1398266341) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30397072 + ... + 30397117.

It is an arithmetic number, because the mean of its divisors is an integer number (364765140).

Almost surely, 2^1398266347 is an apocalyptic number.

1398266347 is a deficient number, since it is larger than the sum of its proper divisors (60794213).

1398266347 is an equidigital number, since it uses as much as digits as its factorization.

1398266347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60794212.

The product of its digits is 1306368, while the sum is 49.

The square root of 1398266347 is about 37393.3997785705. The cubic root of 1398266347 is about 1118.2269850494.

The spelling of 1398266347 in words is "one billion, three hundred ninety-eight million, two hundred sixty-six thousand, three hundred forty-seven".