1089465 has 32 divisors (see below), whose sum is σ = 1940736. Its totient is φ = 518400.

The previous prime is 1089463. The next prime is 1089469. The reversal of 1089465 is 5649801.

1089465 = 19² + 20² + ... + 148².

It is not a de Polignac number, because 1089465 - 2¹ = 1089463 is a prime.

1089465 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1089461) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7140 + ... + 7290.

It is an arithmetic number, because the mean of its divisors is an integer number (60648).

2^1089465 is an apocalyptic number.

1089465 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1089465 is a deficient number, since it is larger than the sum of its proper divisors (851271).

1089465 is a wasteful number, since it uses less digits than its factorization.

1089465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209.

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 1089465 is about 1043.7744009124. The cubic root of 1089465 is about 102.8974062496.

The spelling of 1089465 in words is "one million, eighty-nine thousand, four hundred sixty-five".