5438721446 has 8 divisors (see below), whose sum is σ = 8172998040. Its totient is φ = 2714388768.

The previous prime is 5438721439. The next prime is 5438721517. The reversal of 5438721446 is 6441278345.

It is a happy number.

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 5438721397 and 5438721406.

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, 2484611 + ... + 2486798.

It is an arithmetic number, because the mean of its divisors is an integer number (1021624755).

Almost surely, 2^5438721446 is an apocalyptic number.

5438721446 is a deficient number, since it is larger than the sum of its proper divisors (2734276594).

5438721446 is a wasteful number, since it uses less digits than its factorization.

5438721446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4971958.

The product of its digits is 645120, while the sum is 44.

The square root of 5438721446 is about 73747.6877332435. The cubic root of 5438721446 is about 1758.5940741419.

The spelling of 5438721446 in words is "five billion, four hundred thirty-eight million, seven hundred twenty-one thousand, four hundred forty-six".