612126398 has 8 divisors (see below), whose sum is σ = 988819608. Its totient is φ = 282519864.

The previous prime is 612126397. The next prime is 612126421. The reversal of 612126398 is 893621216.

It is a happy number.

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

It is a super-4 number, since 4×612126398⁴ (a number of 36 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (612126397) 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, 11771636 + ... + 11771687.

It is an arithmetic number, because the mean of its divisors is an integer number (123602451).

Almost surely, 2^612126398 is an apocalyptic number.

612126398 is a deficient number, since it is larger than the sum of its proper divisors (376693210).

612126398 is a wasteful number, since it uses less digits than its factorization.

612126398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23543338.

The product of its digits is 31104, while the sum is 38.

The square root of 612126398 is about 24741.1882899751. The cubic root of 612126398 is about 849.0769208743.

The spelling of 612126398 in words is "six hundred twelve million, one hundred twenty-six thousand, three hundred ninety-eight".