1405090 has 16 divisors (see below), whose sum is σ = 2566080. Its totient is φ = 553840.

The previous prime is 1405087. The next prime is 1405097. The reversal of 1405090 is 905041.

It is not an unprimeable number, because it can be changed into a prime (1405097) 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, 280 + ... + 1699.

It is an arithmetic number, because the mean of its divisors is an integer number (160380).

2^1405090 is an apocalyptic number.

1405090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1405090 is a deficient number, since it is larger than the sum of its proper divisors (1160990).

1405090 is a wasteful number, since it uses less digits than its factorization.

1405090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2057.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 1405090 is about 1185.3649227137. The cubic root of 1405090 is about 112.0043046815.

The spelling of 1405090 in words is "one million, four hundred five thousand, ninety".