1406665147 has 4 divisors (see below), whose sum is σ = 1407388096. Its totient is φ = 1405942200.

The previous prime is 1406665087. The next prime is 1406665151. The reversal of 1406665147 is 7415666041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7415666041 = 7 ⋅1059380863.

It is a cyclic number.

It is not a de Polignac number, because 1406665147 - 2²⁷ = 1272447419 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1406665847) 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, 358548 + ... + 362449.

It is an arithmetic number, because the mean of its divisors is an integer number (351847024).

Almost surely, 2^1406665147 is an apocalyptic number.

1406665147 is a deficient number, since it is larger than the sum of its proper divisors (722949).

1406665147 is an equidigital number, since it uses as much as digits as its factorization.

1406665147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 722948.

The product of its (nonzero) digits is 120960, while the sum is 40.

The square root of 1406665147 is about 37505.5348848673. The cubic root of 1406665147 is about 1120.4614241912.

The spelling of 1406665147 in words is "one billion, four hundred six million, six hundred sixty-five thousand, one hundred forty-seven".