1394632879 has 2 divisors, whose sum is σ = 1394632880. Its totient is φ = 1394632878.

The previous prime is 1394632871. The next prime is 1394632901. The reversal of 1394632879 is 9782364931.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1394632879 - 2³ = 1394632871 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1394632871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 697316439 + 697316440.

It is an arithmetic number, because the mean of its divisors is an integer number (697316440).

Almost surely, 2^1394632879 is an apocalyptic number.

1394632879 is a deficient number, since it is larger than the sum of its proper divisors (1).

1394632879 is an equidigital number, since it uses as much as digits as its factorization.

1394632879 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1959552, while the sum is 52.

The square root of 1394632879 is about 37344.7838258571. The cubic root of 1394632879 is about 1117.2575544858.

The spelling of 1394632879 in words is "one billion, three hundred ninety-four million, six hundred thirty-two thousand, eight hundred seventy-nine".