611442443 has 4 divisors (see below), whose sum is σ = 611509728. Its totient is φ = 611375160.

The previous prime is 611442437. The next prime is 611442457. The reversal of 611442443 is 344244116.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 611442443 - 2¹⁴ = 611426059 is a prime.

It is a super-2 number, since 2×611442443² = 747723722203616498, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (611442463) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17396 + ... + 39057.

It is an arithmetic number, because the mean of its divisors is an integer number (152877432).

Almost surely, 2^611442443 is an apocalyptic number.

611442443 is a deficient number, since it is larger than the sum of its proper divisors (67285).

611442443 is a wasteful number, since it uses less digits than its factorization.

611442443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67284.

The product of its digits is 9216, while the sum is 29.

The square root of 611442443 is about 24727.3622329597. The cubic root of 611442443 is about 848.7605663690.

Adding to 611442443 its reverse (344244116), we get a palindrome (955686559).

The spelling of 611442443 in words is "six hundred eleven million, four hundred forty-two thousand, four hundred forty-three".