1088405 has 4 divisors (see below), whose sum is σ = 1306092. Its totient is φ = 870720.

The previous prime is 1088393. The next prime is 1088407. The reversal of 1088405 is 5048801.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 253009 + 835396 = 503^2 + 914^2 .

It is not a de Polignac number, because 1088405 - 2⁴ = 1088389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1088407) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 108836 + ... + 108845.

It is an arithmetic number, because the mean of its divisors is an integer number (326523).

2^1088405 is an apocalyptic number.

It is an amenable number.

1088405 is a deficient number, since it is larger than the sum of its proper divisors (217687).

1088405 is an equidigital number, since it uses as much as digits as its factorization.

1088405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217686.

The product of its (nonzero) digits is 1280, while the sum is 26.

The square root of 1088405 is about 1043.2665047820. The cubic root of 1088405 is about 102.8640239187.

The spelling of 1088405 in words is "one million, eighty-eight thousand, four hundred five".