393140077 has 16 divisors (see below), whose sum is σ = 452128320. Its totient is φ = 338083200.

The previous prime is 393140063. The next prime is 393140117. The reversal of 393140077 is 770041393.

It is a cyclic number.

It is not a de Polignac number, because 393140077 - 2¹¹ = 393138029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (393140017) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 227577 + ... + 229297.

It is an arithmetic number, because the mean of its divisors is an integer number (28258020).

Almost surely, 2^393140077 is an apocalyptic number.

It is an amenable number.

393140077 is a deficient number, since it is larger than the sum of its proper divisors (58988243).

393140077 is a wasteful number, since it uses less digits than its factorization.

393140077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2844.

The product of its (nonzero) digits is 15876, while the sum is 34.

The square root of 393140077 is about 19827.7602618147. The cubic root of 393140077 is about 732.5699604307.

The spelling of 393140077 in words is "three hundred ninety-three million, one hundred forty thousand, seventy-seven".