1398223486 has 16 divisors (see below), whose sum is σ = 2306915568. Its totient is φ = 635554920.

The previous prime is 1398223459. The next prime is 1398223501. The reversal of 1398223486 is 6843228931.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 259965 + ... + 265288.

It is an arithmetic number, because the mean of its divisors is an integer number (144182223).

Almost surely, 2^1398223486 is an apocalyptic number.

1398223486 is a deficient number, since it is larger than the sum of its proper divisors (908692082).

1398223486 is an equidigital number, since it uses as much as digits as its factorization.

1398223486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 525288 (or 525266 counting only the distinct ones).

The product of its digits is 497664, while the sum is 46.

The square root of 1398223486 is about 37392.8266650169. The cubic root of 1398223486 is about 1118.2155592777.

Subtracting 1398223486 from its reverse (6843228931), we obtain a palindrome (5445005445).

The spelling of 1398223486 in words is "one billion, three hundred ninety-eight million, two hundred twenty-three thousand, four hundred eighty-six".