1394495987 has 2 divisors, whose sum is σ = 1394495988. Its totient is φ = 1394495986.

The previous prime is 1394495983. The next prime is 1394496007. The reversal of 1394495987 is 7895944931.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1394495987 - 2² = 1394495983 is a prime.

It is not a weakly prime, because it can be changed into another prime (1394495981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 697247993 + 697247994.

It is an arithmetic number, because the mean of its divisors is an integer number (697247994).

Almost surely, 2^1394495987 is an apocalyptic number.

1394495987 is a deficient number, since it is larger than the sum of its proper divisors (1).

1394495987 is an equidigital number, since it uses as much as digits as its factorization.

1394495987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9797760, while the sum is 59.

The square root of 1394495987 is about 37342.9509680207. The cubic root of 1394495987 is about 1117.2209980014.

The spelling of 1394495987 in words is "one billion, three hundred ninety-four million, four hundred ninety-five thousand, nine hundred eighty-seven".