6091439639 has 2 divisors, whose sum is σ = 6091439640. Its totient is φ = 6091439638.

The previous prime is 6091439597. The next prime is 6091439663. The reversal of 6091439639 is 9369341906.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6091439639 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6091439239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3045719819 + 3045719820.

It is an arithmetic number, because the mean of its divisors is an integer number (3045719820).

Almost surely, 2^6091439639 is an apocalyptic number.

6091439639 is a deficient number, since it is larger than the sum of its proper divisors (1).

6091439639 is an equidigital number, since it uses as much as digits as its factorization.

6091439639 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 944784, while the sum is 50.

The square root of 6091439639 is about 78047.6754234231. The cubic root of 6091439639 is about 1826.3050290661.

The spelling of 6091439639 in words is "six billion, ninety-one million, four hundred thirty-nine thousand, six hundred thirty-nine".