1405659223 has 4 divisors (see below), whose sum is σ = 1405816528. Its totient is φ = 1405501920.

The previous prime is 1405659217. The next prime is 1405659239. The reversal of 1405659223 is 3229565041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3229565041 = 73 ⋅44240617.

It is a cyclic number.

It is not a de Polignac number, because 1405659223 - 2⁹ = 1405658711 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 (1405659253) 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, 64386 + ... + 83407.

It is an arithmetic number, because the mean of its divisors is an integer number (351454132).

Almost surely, 2^1405659223 is an apocalyptic number.

1405659223 is a deficient number, since it is larger than the sum of its proper divisors (157305).

1405659223 is an equidigital number, since it uses as much as digits as its factorization.

1405659223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157304.

The product of its (nonzero) digits is 64800, while the sum is 37.

The square root of 1405659223 is about 37492.1221458589. The cubic root of 1405659223 is about 1120.1942751320.

The spelling of 1405659223 in words is "one billion, four hundred five million, six hundred fifty-nine thousand, two hundred twenty-three".