60390139 has 4 divisors (see below), whose sum is σ = 62338240. Its totient is φ = 58442040.

The previous prime is 60390133. The next prime is 60390167. The reversal of 60390139 is 93109306.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 60390139 - 2³ = 60390131 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31), and also a Moran number because the ratio is a prime number: 1948069 = 60390139 / (6 + 0 + 3 + 9 + 0 + 1 + 3 + 9).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 60390139.

It is not an unprimeable number, because it can be changed into a prime (60390131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 974004 + ... + 974065.

It is an arithmetic number, because the mean of its divisors is an integer number (15584560).

Almost surely, 2^60390139 is an apocalyptic number.

60390139 is a deficient number, since it is larger than the sum of its proper divisors (1948101).

60390139 is a wasteful number, since it uses less digits than its factorization.

60390139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1948100.

The product of its (nonzero) digits is 4374, while the sum is 31.

The square root of 60390139 is about 7771.1092515805. The cubic root of 60390139 is about 392.3334552458. Note that the first 3 decimals are identical.

The spelling of 60390139 in words is "sixty million, three hundred ninety thousand, one hundred thirty-nine".