7444721400 has 48 divisors (see below), whose sum is σ = 23078638200. Its totient is φ = 1985258880.

The previous prime is 7444721381. The next prime is 7444721429. The reversal of 7444721400 is 41274447.

It is a happy number.

It is a super-4 number, since 4×7444721400⁴ (a number of 41 digits) contains 4444 as substring.

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 11 ways as a sum of consecutive naturals, for example, 6203335 + ... + 6204534.

Almost surely, 2^7444721400 is an apocalyptic number.

It is an amenable number.

7444721400 is an abundant number, since it is smaller than the sum of its proper divisors (15633916800).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7444721400 is a wasteful number, since it uses less digits than its factorization.

7444721400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12407888 (or 12407879 counting only the distinct ones).

The product of its (nonzero) digits is 25088, while the sum is 33.

The square root of 7444721400 is about 86282.7989810252. The cubic root of 7444721400 is about 1952.6128812923.

Adding to 7444721400 its reverse (41274447), we get a palindrome (7485995847).

The spelling of 7444721400 in words is "seven billion, four hundred forty-four million, seven hundred twenty-one thousand, four hundred".