5121446399 has 4 divisors (see below), whose sum is σ = 5141374464. Its totient is φ = 5101518336.

The previous prime is 5121446383. The next prime is 5121446417. The reversal of 5121446399 is 9936441215.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9936441215 = 5 ⋅1987288243.

It is a cyclic number.

It is not a de Polignac number, because 5121446399 - 2⁴ = 5121446383 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5121446699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9963647 + ... + 9964160.

It is an arithmetic number, because the mean of its divisors is an integer number (1285343616).

Almost surely, 2^5121446399 is an apocalyptic number.

5121446399 is a deficient number, since it is larger than the sum of its proper divisors (19928065).

5121446399 is a wasteful number, since it uses less digits than its factorization.

5121446399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19928064.

The product of its digits is 233280, while the sum is 44.

The square root of 5121446399 is about 71564.2815865569. The cubic root of 5121446399 is about 1723.7100373790.

The spelling of 5121446399 in words is "five billion, one hundred twenty-one million, four hundred forty-six thousand, three hundred ninety-nine".