1386939479 has 2 divisors, whose sum is σ = 1386939480. Its totient is φ = 1386939478.

The previous prime is 1386939461. The next prime is 1386939511. The reversal of 1386939479 is 9749396831.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1386939479 - 2⁸ = 1386939223 is a prime.

It is a super-2 number, since 2×1386939479² = 3847202236817582882, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1386939439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 693469739 + 693469740.

It is an arithmetic number, because the mean of its divisors is an integer number (693469740).

Almost surely, 2^1386939479 is an apocalyptic number.

1386939479 is a deficient number, since it is larger than the sum of its proper divisors (1).

1386939479 is an equidigital number, since it uses as much as digits as its factorization.

1386939479 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 1386939479 is about 37241.6363630816. The cubic root of 1386939479 is about 1115.1993393726.

The spelling of 1386939479 in words is "one billion, three hundred eighty-six million, nine hundred thirty-nine thousand, four hundred seventy-nine".