61943959 has 16 divisors (see below), whose sum is σ = 77423616. Its totient is φ = 48146400.

The previous prime is 61943941. The next prime is 61943969. The reversal of 61943959 is 95934916.

61943959 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 61943959 - 2⁵ = 61943927 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 (61943969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40914 + ... + 42400.

It is an arithmetic number, because the mean of its divisors is an integer number (4838976).

Almost surely, 2^61943959 is an apocalyptic number.

61943959 is a deficient number, since it is larger than the sum of its proper divisors (15479657).

61943959 is a wasteful number, since it uses less digits than its factorization.

61943959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2046.

The product of its digits is 262440, while the sum is 46.

The square root of 61943959 is about 7870.4484624448. The cubic root of 61943959 is about 395.6698754487.

It can be divided in two parts, 6194 and 3959, that added together give a triangular number (10153 = T₁₄₂).

The spelling of 61943959 in words is "sixty-one million, nine hundred forty-three thousand, nine hundred fifty-nine".