61793839 has 4 divisors (see below), whose sum is σ = 61817224. Its totient is φ = 61770456.

The previous prime is 61793807. The next prime is 61793869. The reversal of 61793839 is 93839716.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 61793839 - 2⁵ = 61793807 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 (61793869) 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, 7137 + ... + 13210.

It is an arithmetic number, because the mean of its divisors is an integer number (15454306).

Almost surely, 2^61793839 is an apocalyptic number.

61793839 is a deficient number, since it is larger than the sum of its proper divisors (23385).

61793839 is a wasteful number, since it uses less digits than its factorization.

61793839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23384.

The product of its digits is 244944, while the sum is 46.

The square root of 61793839 is about 7860.9057366184. The cubic root of 61793839 is about 395.3499841005.

The spelling of 61793839 in words is "sixty-one million, seven hundred ninety-three thousand, eight hundred thirty-nine".