394256652493 has 16 divisors (see below), whose sum is σ = 430794745920. Its totient is φ = 357834988800.

The previous prime is 394256652463. The next prime is 394256652497.

394256652493 is nontrivially palindromic in base 10.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-394256652493 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (394256652497) 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, 32552923 + ... + 32565031.

It is an arithmetic number, because the mean of its divisors is an integer number (26924671620).

Almost surely, 2^394256652493 is an apocalyptic number.

It is an amenable number.

394256652493 is a deficient number, since it is larger than the sum of its proper divisors (36538093427).

394256652493 is a wasteful number, since it uses less digits than its factorization.

394256652493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16668.

The product of its digits is 41990400, while the sum is 58.

The spelling of 394256652493 in words is "three hundred ninety-four billion, two hundred fifty-six million, six hundred fifty-two thousand, four hundred ninety-three".