1406644422659 has 8 divisors (see below), whose sum is σ = 1609580769120. Its totient is φ = 1204204862016.

The previous prime is 1406644422649. The next prime is 1406644422661. The reversal of 1406644422659 is 9562244466041.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1406644422659 - 2¹⁶ = 1406644357123 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1406644422659.

It is not an unprimeable number, because it can be changed into a prime (1406644422649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 124190384 + ... + 124201709.

It is an arithmetic number, because the mean of its divisors is an integer number (201197596140).

Almost surely, 2^{1406644422659} is an apocalyptic number.

1406644422659 is a deficient number, since it is larger than the sum of its proper divisors (202936346461).

1406644422659 is an equidigital number, since it uses as much as digits as its factorization.

1406644422659 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248392909.

The product of its (nonzero) digits is 9953280, while the sum is 53.

The spelling of 1406644422659 in words is "one trillion, four hundred six billion, six hundred forty-four million, four hundred twenty-two thousand, six hundred fifty-nine".