1398022453 has 4 divisors (see below), whose sum is σ = 1398100288. Its totient is φ = 1397944620.

The previous prime is 1398022441. The next prime is 1398022463. The reversal of 1398022453 is 3542208931.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 3542208931 = 19 ⋅186432049.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1398022453 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 (1398022463) 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, 3268 + ... + 52978.

It is an arithmetic number, because the mean of its divisors is an integer number (349525072).

Almost surely, 2^1398022453 is an apocalyptic number.

It is an amenable number.

1398022453 is a deficient number, since it is larger than the sum of its proper divisors (77835).

1398022453 is an equidigital number, since it uses as much as digits as its factorization.

1398022453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77834.

The product of its (nonzero) digits is 51840, while the sum is 37.

The square root of 1398022453 is about 37390.1384458523. The cubic root of 1398022453 is about 1118.1619653171.

The spelling of 1398022453 in words is "one billion, three hundred ninety-eight million, twenty-two thousand, four hundred fifty-three".