1072389 has 8 divisors (see below), whose sum is σ = 1438560. Its totient is φ = 710576.

The previous prime is 1072387. The next prime is 1072397. The reversal of 1072389 is 9832701.

1072389 = T₇ + T₈ + ... + T₁₈₅.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1072389 - 2¹ = 1072387 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1072381) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 462 + ... + 1535.

It is an arithmetic number, because the mean of its divisors is an integer number (179820).

2^1072389 is an apocalyptic number.

It is an amenable number.

1072389 is a deficient number, since it is larger than the sum of its proper divisors (366171).

1072389 is a wasteful number, since it uses less digits than its factorization.

1072389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2179.

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 1072389 is about 1035.5621661687. The cubic root of 1072389 is about 102.3569768096.

The spelling of 1072389 in words is "one million, seventy-two thousand, three hundred eighty-nine".