1398249386 has 8 divisors (see below), whose sum is σ = 2097984000. Its totient is φ = 698921388.

The previous prime is 1398249367. The next prime is 1398249407. The reversal of 1398249386 is 6839428931.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 92906 + ... + 106901.

It is an arithmetic number, because the mean of its divisors is an integer number (262248000).

Almost surely, 2^1398249386 is an apocalyptic number.

1398249386 is a deficient number, since it is larger than the sum of its proper divisors (699734614).

1398249386 is a wasteful number, since it uses less digits than its factorization.

1398249386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203308.

The product of its digits is 2239488, while the sum is 53.

The square root of 1398249386 is about 37393.1729865226. The cubic root of 1398249386 is about 1118.2224636589. Note that the first 3 decimals are identical.

The spelling of 1398249386 in words is "one billion, three hundred ninety-eight million, two hundred forty-nine thousand, three hundred eighty-six".