1394427949 has 2 divisors, whose sum is σ = 1394427950. Its totient is φ = 1394427948.

The previous prime is 1394427911. The next prime is 1394427989. The reversal of 1394427949 is 9497244931.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1153960900 + 240467049 = 33970^2 + 15507^2 .

It is an emirp because it is prime and its reverse (9497244931) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1394427949 - 2⁷ = 1394427821 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1394427896 and 1394427905.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1394427989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 697213974 + 697213975.

It is an arithmetic number, because the mean of its divisors is an integer number (697213975).

Almost surely, 2^1394427949 is an apocalyptic number.

It is an amenable number.

1394427949 is a deficient number, since it is larger than the sum of its proper divisors (1).

1394427949 is an equidigital number, since it uses as much as digits as its factorization.

1394427949 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 1394427949 is about 37342.0399683788. The cubic root of 1394427949 is about 1117.2028278239.

The spelling of 1394427949 in words is "one billion, three hundred ninety-four million, four hundred twenty-seven thousand, nine hundred forty-nine".