1390022089 has 9 divisors (see below), whose sum is σ = 1453982439. Its totient is φ = 1328766120.

The previous prime is 1390022087. The next prime is 1390022093. The reversal of 1390022089 is 9802200931.

The square root of 1390022089 is 37283.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 1068178489 + 321843600 = 32683^2 + 17940^2 .

It is not a de Polignac number, because 1390022089 - 2¹ = 1390022087 is a prime.

It is a super-2 number, since 2×1390022089² = 3864322815815847842, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1390022087) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 856699 + ... + 858319.

Almost surely, 2^1390022089 is an apocalyptic number.

1390022089 is the 37283-rd square number.

1390022089 is the 18642-nd centered octagonal number.

It is an amenable number.

1390022089 is a deficient number, since it is larger than the sum of its proper divisors (63960350).

1390022089 is an frugal number, since it uses more digits than its factorization.

1390022089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3288 (or 1644 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 34.

The cubic root of 1390022089 is about 1116.0249415789.

The spelling of 1390022089 in words is "one billion, three hundred ninety million, twenty-two thousand, eighty-nine".