393442059397 has 4 divisors (see below), whose sum is σ = 393728617260. Its totient is φ = 393155501536.

The previous prime is 393442059391. The next prime is 393442059403. The reversal of 393442059397 is 793950244393.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (393442059391) and next prime (393442059403).

It can be written as a sum of positive squares in 2 ways, for example, as 274443967876 + 118998091521 = 523874^2 + 344961^2 .

It is a cyclic number.

It is not a de Polignac number, because 393442059397 - 2³ = 393442059389 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 (393442059391) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 143276872 + ... + 143279617.

It is an arithmetic number, because the mean of its divisors is an integer number (98432154315).

Almost surely, 2^393442059397 is an apocalyptic number.

It is an amenable number.

393442059397 is a deficient number, since it is larger than the sum of its proper divisors (286557863).

393442059397 is a wasteful number, since it uses less digits than its factorization.

393442059397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286557862.

The product of its (nonzero) digits is 22044960, while the sum is 58.

The spelling of 393442059397 in words is "three hundred ninety-three billion, four hundred forty-two million, fifty-nine thousand, three hundred ninety-seven".