1406706445 has 4 divisors (see below), whose sum is σ = 1688047740. Its totient is φ = 1125365152.

The previous prime is 1406706419. The next prime is 1406706491. The reversal of 1406706445 is 5446076041.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 196084009 + 1210622436 = 14003^2 + 34794^2 .

It is a cyclic number.

It is not a de Polignac number, because 1406706445 - 2⁷ = 1406706317 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 140670640 + ... + 140670649.

It is an arithmetic number, because the mean of its divisors is an integer number (422011935).

Almost surely, 2^1406706445 is an apocalyptic number.

It is an amenable number.

1406706445 is a deficient number, since it is larger than the sum of its proper divisors (281341295).

1406706445 is an equidigital number, since it uses as much as digits as its factorization.

1406706445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281341294.

The product of its (nonzero) digits is 80640, while the sum is 37.

The square root of 1406706445 is about 37506.0854395657. The cubic root of 1406706445 is about 1120.4723892180.

The spelling of 1406706445 in words is "one billion, four hundred six million, seven hundred six thousand, four hundred forty-five".