1927139 has 2 divisors, whose sum is σ = 1927140. Its totient is φ = 1927138.

The previous prime is 1927129. The next prime is 1927157. The reversal of 1927139 is 9317291.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1927139 is a prime.

It is not a weakly prime, because it can be changed into another prime (1927109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 963569 + 963570.

It is an arithmetic number, because the mean of its divisors is an integer number (963570).

2^1927139 is an apocalyptic number.

1927139 is a deficient number, since it is larger than the sum of its proper divisors (1).

1927139 is an equidigital number, since it uses as much as digits as its factorization.

1927139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3402, while the sum is 32.

The square root of 1927139 is about 1388.2143206292. The cubic root of 1927139 is about 124.4431550733.

The spelling of 1927139 in words is "one million, nine hundred twenty-seven thousand, one hundred thirty-nine".