61338839 has 8 divisors (see below), whose sum is σ = 65770560. Its totient is φ = 56998656.

The previous prime is 61338833. The next prime is 61338847. The reversal of 61338839 is 93883316.

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

It is a cyclic number.

It is not a de Polignac number, because 61338839 - 2¹² = 61334743 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61338796 and 61338805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61338833) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21494 + ... + 24179.

It is an arithmetic number, because the mean of its divisors is an integer number (8221320).

Almost surely, 2^61338839 is an apocalyptic number.

61338839 is a deficient number, since it is larger than the sum of its proper divisors (4431721).

61338839 is a wasteful number, since it uses less digits than its factorization.

61338839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45769.

The product of its digits is 93312, while the sum is 41.

The square root of 61338839 is about 7831.9115801955. The cubic root of 61338839 is about 394.3772465365.

The spelling of 61338839 in words is "sixty-one million, three hundred thirty-eight thousand, eight hundred thirty-nine".