6139930 has 8 divisors (see below), whose sum is σ = 11051892. Its totient is φ = 2455968.

The previous prime is 6139921. The next prime is 6139937. The reversal of 6139930 is 399316.

It can be written as a sum of positive squares in 2 ways, for example, as 5851561 + 288369 = 2419^2 + 537^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 6139892 and 6139901.

It is not an unprimeable number, because it can be changed into a prime (6139937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 306987 + ... + 307006.

Almost surely, 2^6139930 is an apocalyptic number.

6139930 is a deficient number, since it is larger than the sum of its proper divisors (4911962).

6139930 is a wasteful number, since it uses less digits than its factorization.

6139930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 614000.

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

The square root of 6139930 is about 2477.8882137821. Note that the first 3 decimals coincide. The cubic root of 6139930 is about 183.1138272798.

The spelling of 6139930 in words is "six million, one hundred thirty-nine thousand, nine hundred thirty".