1089431 has 8 divisors (see below), whose sum is σ = 1257984. Its totient is φ = 924120.

The previous prime is 1089427. The next prime is 1089457. The reversal of 1089431 is 1349801.

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 1089431 - 2² = 1089427 is a prime.

It is a super-2 number, since 2×1089431² = 2373719807522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1089431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1089401) 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, 35 + ... + 1476.

It is an arithmetic number, because the mean of its divisors is an integer number (157248).

2^1089431 is an apocalyptic number.

1089431 is a deficient number, since it is larger than the sum of its proper divisors (168553).

1089431 is a wasteful number, since it uses less digits than its factorization.

1089431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1621.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 1089431 is about 1043.7581137409. The cubic root of 1089431 is about 102.8963358318.

The spelling of 1089431 in words is "one million, eighty-nine thousand, four hundred thirty-one".