1539983 has 2 divisors, whose sum is σ = 1539984. Its totient is φ = 1539982.

The previous prime is 1539973. The next prime is 1539991. The reversal of 1539983 is 3899351.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1539983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1539913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 769991 + 769992.

It is an arithmetic number, because the mean of its divisors is an integer number (769992).

2^1539983 is an apocalyptic number.

1539983 is a deficient number, since it is larger than the sum of its proper divisors (1).

1539983 is an equidigital number, since it uses as much as digits as its factorization.

1539983 is an evil number, because the sum of its binary digits is even.

The product of its digits is 29160, while the sum is 38.

The square root of 1539983 is about 1240.9605150850. The cubic root of 1539983 is about 115.4796101011.

The spelling of 1539983 in words is "one million, five hundred thirty-nine thousand, nine hundred eighty-three".