60139891 has 8 divisors (see below), whose sum is σ = 69560064. Its totient is φ = 50926920.

The previous prime is 60139867. The next prime is 60139913. The reversal of 60139891 is 19893106.

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 60139891 - 2¹⁹ = 59615603 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 60139891.

It is not an unprimeable number, because it can be changed into a prime (60139801) 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, 51175 + ... + 52336.

It is an arithmetic number, because the mean of its divisors is an integer number (8695008).

Almost surely, 2^60139891 is an apocalyptic number.

60139891 is a deficient number, since it is larger than the sum of its proper divisors (9420173).

60139891 is a wasteful number, since it uses less digits than its factorization.

60139891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103601.

The product of its (nonzero) digits is 11664, while the sum is 37.

The square root of 60139891 is about 7754.9913604078. The cubic root of 60139891 is about 391.7907806044.

The spelling of 60139891 in words is "sixty million, one hundred thirty-nine thousand, eight hundred ninety-one".