612212444 has 6 divisors (see below), whose sum is σ = 1071371784. Its totient is φ = 306106220.

The previous prime is 612212443. The next prime is 612212453. The reversal of 612212444 is 444212216.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (612212443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 76526552 + ... + 76526559.

It is an arithmetic number, because the mean of its divisors is an integer number (178561964).

Almost surely, 2^612212444 is an apocalyptic number.

It is an amenable number.

612212444 is a deficient number, since it is larger than the sum of its proper divisors (459159340).

612212444 is a wasteful number, since it uses less digits than its factorization.

612212444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153053115 (or 153053113 counting only the distinct ones).

The product of its digits is 3072, while the sum is 26.

The square root of 612212444 is about 24742.9271510062. The cubic root of 612212444 is about 849.1167036436.

The spelling of 612212444 in words is "six hundred twelve million, two hundred twelve thousand, four hundred forty-four".