1406452431644 has 24 divisors (see below), whose sum is σ = 2650715463648. Its totient is φ = 649108975680.

The previous prime is 1406452431607. The next prime is 1406452431673. The reversal of 1406452431644 is 4461342546041.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1406452431595 and 1406452431604.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1056689 + ... + 1982295.

It is an arithmetic number, because the mean of its divisors is an integer number (110446477652).

Almost surely, 2^{1406452431644} is an apocalyptic number.

It is an amenable number.

1406452431644 is a deficient number, since it is larger than the sum of its proper divisors (1244263032004).

1406452431644 is a wasteful number, since it uses less digits than its factorization.

1406452431644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 954845 (or 954843 counting only the distinct ones).

The product of its (nonzero) digits is 1105920, while the sum is 44.

Adding to 1406452431644 its reverse (4461342546041), we get a palindrome (5867794977685).

The spelling of 1406452431644 in words is "one trillion, four hundred six billion, four hundred fifty-two million, four hundred thirty-one thousand, six hundred forty-four".