1090729 has 8 divisors (see below), whose sum is σ = 1163520. Its totient is φ = 1020096.

The previous prime is 1090721. The next prime is 1090757. The reversal of 1090729 is 9270901.

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

It is not a de Polignac number, because 1090729 - 2³ = 1090721 is a prime.

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

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1090697 and 1090706.

It is not an unprimeable number, because it can be changed into a prime (1090721) 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, 577 + ... + 1585.

It is an arithmetic number, because the mean of its divisors is an integer number (145440).

2^1090729 is an apocalyptic number.

It is an amenable number.

1090729 is a deficient number, since it is larger than the sum of its proper divisors (72791).

1090729 is a wasteful number, since it uses less digits than its factorization.

1090729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1079.

The product of its (nonzero) digits is 1134, while the sum is 28.

The square root of 1090729 is about 1044.3797202167. The cubic root of 1090729 is about 102.9371848120.

The spelling of 1090729 in words is "one million, ninety thousand, seven hundred twenty-nine".