61941139 has 12 divisors (see below), whose sum is σ = 69739936. Its totient is φ = 54684432.

The previous prime is 61941137. The next prime is 61941151. The reversal of 61941139 is 93114916.

It is a happy number.

61941139 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 61941139 - 2¹ = 61941137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61941133) 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 11 ways as a sum of consecutive naturals, for example, 2374 + ... + 11380.

Almost surely, 2^61941139 is an apocalyptic number.

61941139 is a deficient number, since it is larger than the sum of its proper divisors (7798797).

61941139 is a wasteful number, since it uses less digits than its factorization.

61941139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9066 (or 9043 counting only the distinct ones).

The product of its digits is 5832, while the sum is 34.

The square root of 61941139 is about 7870.2693092422. The cubic root of 61941139 is about 395.6638710645.

The spelling of 61941139 in words is "sixty-one million, nine hundred forty-one thousand, one hundred thirty-nine".