1406806444 has 12 divisors (see below), whose sum is σ = 2514292704. Its totient is φ = 688437104.

The previous prime is 1406806409. The next prime is 1406806451. The reversal of 1406806444 is 4446086041.

It is a super-3 number, since 3×1406806444³ (a number of 28 digits) contains 333 as substring.

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, 3741319 + ... + 3741694.

It is an arithmetic number, because the mean of its divisors is an integer number (209524392).

Almost surely, 2^1406806444 is an apocalyptic number.

It is an amenable number.

1406806444 is a deficient number, since it is larger than the sum of its proper divisors (1107486260).

1406806444 is a wasteful number, since it uses less digits than its factorization.

1406806444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7483064 (or 7483062 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 37.

The square root of 1406806444 is about 37507.4185195409. The cubic root of 1406806444 is about 1120.4989390510.

The spelling of 1406806444 in words is "one billion, four hundred six million, eight hundred six thousand, four hundred forty-four".