1322999998 has 4 divisors (see below), whose sum is σ = 1984500000. Its totient is φ = 661499998.

The previous prime is 1322999987. The next prime is 1322999999. The reversal of 1322999998 is 8999992231.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8999992231 = 11351 ⋅792881.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1322999999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 330749998 + ... + 330750001.

It is an arithmetic number, because the mean of its divisors is an integer number (496125000).

Almost surely, 2^1322999998 is an apocalyptic number.

1322999998 is a deficient number, since it is larger than the sum of its proper divisors (661500002).

1322999998 is an equidigital number, since it uses as much as digits as its factorization.

1322999998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 661500001.

The product of its digits is 5668704, while the sum is 61.

The square root of 1322999998 is about 36373.0669314536. The cubic root of 1322999998 is about 1097.7917124537.

The spelling of 1322999998 in words is "one billion, three hundred twenty-two million, nine hundred ninety-nine thousand, nine hundred ninety-eight".