1989401322 has 32 divisors (see below), whose sum is σ = 4079797632. Its totient is φ = 646461504.

The previous prime is 1989401291. The next prime is 1989401333. The reversal of 1989401322 is 2231049891.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30003 + ... + 69849.

It is an arithmetic number, because the mean of its divisors is an integer number (127493676).

Almost surely, 2^1989401322 is an apocalyptic number.

1989401322 is an abundant number, since it is smaller than the sum of its proper divisors (2090396310).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1989401322 is a wasteful number, since it uses less digits than its factorization.

1989401322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40062.

The product of its (nonzero) digits is 31104, while the sum is 39.

The square root of 1989401322 is about 44602.7053215385. The cubic root of 1989401322 is about 1257.6915239879.

The spelling of 1989401322 in words is "one billion, nine hundred eighty-nine million, four hundred one thousand, three hundred twenty-two".