1406455469 has 4 divisors (see below), whose sum is σ = 1409659680. Its totient is φ = 1403251260.

The previous prime is 1406455439. The next prime is 1406455493. The reversal of 1406455469 is 9645546041.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9645546041 = 23 ⋅419371567.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1406455469 is a prime.

It is a super-2 number, since 2×1406455469² = 3956233972560019922, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1406455439) 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, 1601447 + ... + 1602324.

It is an arithmetic number, because the mean of its divisors is an integer number (352414920).

Almost surely, 2^1406455469 is an apocalyptic number.

It is an amenable number.

1406455469 is a deficient number, since it is larger than the sum of its proper divisors (3204211).

1406455469 is an equidigital number, since it uses as much as digits as its factorization.

1406455469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3204210.

The product of its (nonzero) digits is 518400, while the sum is 44.

The square root of 1406455469 is about 37502.7394866028. The cubic root of 1406455469 is about 1120.4057493006.

The spelling of 1406455469 in words is "one billion, four hundred six million, four hundred fifty-five thousand, four hundred sixty-nine".