1406455709 has 4 divisors (see below), whose sum is σ = 1451825280. Its totient is φ = 1361086140.

The previous prime is 1406455649. The next prime is 1406455763. The reversal of 1406455709 is 9075546041.

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.

It is a cyclic number.

It is not a de Polignac number, because 1406455709 - 2²⁸ = 1138020253 is a prime.

It is a super-2 number, since 2×1406455709² = 3956235322757385362, 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 (1406455789) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22684739 + ... + 22684800.

It is an arithmetic number, because the mean of its divisors is an integer number (362956320).

Almost surely, 2^1406455709 is an apocalyptic number.

It is an amenable number.

1406455709 is a deficient number, since it is larger than the sum of its proper divisors (45369571).

1406455709 is an equidigital number, since it uses as much as digits as its factorization.

1406455709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45369570.

The product of its (nonzero) digits is 151200, while the sum is 41.

The square root of 1406455709 is about 37502.7426863690. The cubic root of 1406455709 is about 1120.4058130299.

The spelling of 1406455709 in words is "one billion, four hundred six million, four hundred fifty-five thousand, seven hundred nine".