1405269 has 12 divisors (see below), whose sum is σ = 2105376. Its totient is φ = 936684.

The previous prime is 1405267. The next prime is 1405289. The reversal of 1405269 is 9625041.

It is not a de Polignac number, because 1405269 - 2¹ = 1405267 is a prime.

It is a super-2 number, since 2×1405269² = 3949561924722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

1405269 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1405267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2649 + ... + 3134.

It is an arithmetic number, because the mean of its divisors is an integer number (175448).

2^1405269 is an apocalyptic number.

It is an amenable number.

1405269 is a deficient number, since it is larger than the sum of its proper divisors (700107).

1405269 is an frugal number, since it uses more digits than its factorization.

1405269 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5798 (or 5786 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 1405269 is about 1185.4404244837. The cubic root of 1405269 is about 112.0090607041.

The spelling of 1405269 in words is "one million, four hundred five thousand, two hundred sixty-nine".