1394839679 has 2 divisors, whose sum is σ = 1394839680. Its totient is φ = 1394839678.

The previous prime is 1394839673. The next prime is 1394839703. The reversal of 1394839679 is 9769384931.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1394839679 - 2⁸ = 1394839423 is a prime.

It is a super-2 number, since 2×1394839679² = 3891155460225646082, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1394839673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 697419839 + 697419840.

It is an arithmetic number, because the mean of its divisors is an integer number (697419840).

Almost surely, 2^1394839679 is an apocalyptic number.

1394839679 is a deficient number, since it is larger than the sum of its proper divisors (1).

1394839679 is an equidigital number, since it uses as much as digits as its factorization.

1394839679 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8817984, while the sum is 59.

The square root of 1394839679 is about 37347.5525168651. The cubic root of 1394839679 is about 1117.3127750978.

The spelling of 1394839679 in words is "one billion, three hundred ninety-four million, eight hundred thirty-nine thousand, six hundred seventy-nine".