393070087 has 2 divisors, whose sum is σ = 393070088. Its totient is φ = 393070086.

The previous prime is 393070061. The next prime is 393070121. The reversal of 393070087 is 780070393.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-393070087 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (393070057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 196535043 + 196535044.

It is an arithmetic number, because the mean of its divisors is an integer number (196535044).

Almost surely, 2^393070087 is an apocalyptic number.

393070087 is a deficient number, since it is larger than the sum of its proper divisors (1).

393070087 is an equidigital number, since it uses as much as digits as its factorization.

393070087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31752, while the sum is 37.

The square root of 393070087 is about 19825.9952335312. The cubic root of 393070087 is about 732.5264851595.

The spelling of 393070087 in words is "three hundred ninety-three million, seventy thousand, eighty-seven".