1370889 has 12 divisors (see below), whose sum is σ = 2132676. Its totient is φ = 843552.

The previous prime is 1370861. The next prime is 1370891. The reversal of 1370889 is 9880731.

1370889 = 217² + 218² + ... + 242².

It can be written as a sum of positive squares in 2 ways, for example, as 71289 + 1299600 = 267^2 + 1140^2 .

It is not a de Polignac number, because 1370889 - 2⁵ = 1370857 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1370819) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5742 + ... + 5975.

It is an arithmetic number, because the mean of its divisors is an integer number (177723).

2^1370889 is an apocalyptic number.

It is an amenable number.

1370889 is a deficient number, since it is larger than the sum of its proper divisors (761787).

1370889 is a wasteful number, since it uses less digits than its factorization.

1370889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11736 (or 11733 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The square root of 1370889 is about 1170.8496914634. The cubic root of 1370889 is about 111.0880722973.

The spelling of 1370889 in words is "one million, three hundred seventy thousand, eight hundred eighty-nine".