1393950847 has 2 divisors, whose sum is σ = 1393950848. Its totient is φ = 1393950846.

The previous prime is 1393950773. The next prime is 1393950851. The reversal of 1393950847 is 7480593931.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1393950847 is a prime.

It is a super-3 number, since 3×1393950847³ (a number of 28 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1393950847.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1393950647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 696975423 + 696975424.

It is an arithmetic number, because the mean of its divisors is an integer number (696975424).

Almost surely, 2^1393950847 is an apocalyptic number.

1393950847 is a deficient number, since it is larger than the sum of its proper divisors (1).

1393950847 is an equidigital number, since it uses as much as digits as its factorization.

1393950847 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 816480, while the sum is 49.

The square root of 1393950847 is about 37335.6511527521. The cubic root of 1393950847 is about 1117.0753967135.

The spelling of 1393950847 in words is "one billion, three hundred ninety-three million, nine hundred fifty thousand, eight hundred forty-seven".