61393959 has 48 divisors (see below), whose sum is σ = 103034880. Its totient is φ = 34836480.

The previous prime is 61393951. The next prime is 61393963. The reversal of 61393959 is 95939316.

61393959 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 61393959 - 2³ = 61393951 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61393951) 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 47 ways as a sum of consecutive naturals, for example, 238759 + ... + 239015.

It is an arithmetic number, because the mean of its divisors is an integer number (2146560).

Almost surely, 2^61393959 is an apocalyptic number.

61393959 is a deficient number, since it is larger than the sum of its proper divisors (41640921).

61393959 is a wasteful number, since it uses less digits than its factorization.

61393959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 420 (or 417 counting only the distinct ones).

The product of its digits is 196830, while the sum is 45.

The square root of 61393959 is about 7835.4297265689. The cubic root of 61393959 is about 394.4953422708.

The spelling of 61393959 in words is "sixty-one million, three hundred ninety-three thousand, nine hundred fifty-nine".