1051389 has 12 divisors (see below), whose sum is σ = 1528956. Its totient is φ = 696192.

The previous prime is 1051373. The next prime is 1051397. The reversal of 1051389 is 9831501.

It can be written as a sum of positive squares in 2 ways, for example, as 887364 + 164025 = 942^2 + 405^2 .

It is not a de Polignac number, because 1051389 - 2⁴ = 1051373 is a prime.

It is a super-2 number, since 2×1051389² = 2210837658642, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1051319) 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, 1477 + ... + 2069.

It is an arithmetic number, because the mean of its divisors is an integer number (127413).

2^1051389 is an apocalyptic number.

It is an amenable number.

1051389 is a deficient number, since it is larger than the sum of its proper divisors (477567).

1051389 is a wasteful number, since it uses less digits than its factorization.

1051389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 796 (or 793 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 27.

The square root of 1051389 is about 1025.3726151990. The cubic root of 1051389 is about 101.6844341726.

The spelling of 1051389 in words is "one million, fifty-one thousand, three hundred eighty-nine".