394449265015 has 16 divisors (see below), whose sum is σ = 512696364768. Its totient is φ = 289601870976.

The previous prime is 394449264971. The next prime is 394449265019. The reversal of 394449265015 is 510562944493.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 394449265015 - 2¹⁷ = 394449133943 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 (394449265019) 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, 17527629 + ... + 17550118.

It is an arithmetic number, because the mean of its divisors is an integer number (32043522798).

Almost surely, 2^394449265015 is an apocalyptic number.

394449265015 is a deficient number, since it is larger than the sum of its proper divisors (118247099753).

394449265015 is a wasteful number, since it uses less digits than its factorization.

394449265015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35077938.

The product of its (nonzero) digits is 4665600, while the sum is 52.

The spelling of 394449265015 in words is "three hundred ninety-four billion, four hundred forty-nine million, two hundred sixty-five thousand, fifteen".