1090397 has 24 divisors (see below), whose sum is σ = 1473600. Its totient is φ = 799680.

The previous prime is 1090387. The next prime is 1090403. The reversal of 1090397 is 7930901.

It is not a de Polignac number, because 1090397 - 2⁴ = 1090381 is a prime.

It is a super-3 number, since 3×1090397³ = 3889333627632002319, which contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1090387) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 64133 + ... + 64149.

It is an arithmetic number, because the mean of its divisors is an integer number (61400).

2^1090397 is an apocalyptic number.

1090397 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

1090397 is a deficient number, since it is larger than the sum of its proper divisors (383203).

1090397 is an equidigital number, since it uses as much as digits as its factorization.

1090397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66 (or 35 counting only the distinct ones).

The product of its (nonzero) digits is 1701, while the sum is 29.

The square root of 1090397 is about 1044.2207620997. The cubic root of 1090397 is about 102.9267396225.

The spelling of 1090397 in words is "one million, ninety thousand, three hundred ninety-seven".