394506968949 has 6 divisors (see below), whose sum is σ = 569843399606. Its totient is φ = 263004645960.

The previous prime is 394506968917. The next prime is 394506968951. The reversal of 394506968949 is 949869605493.

394506968949 is a `hidden beast` number, since 3 + 9 + 450 + 6 + 96 + 89 + 4 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 342804395025 + 51702573924 = 585495^2 + 227382^2 .

It is not a de Polignac number, because 394506968949 - 2⁵ = 394506968917 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 (394506968909) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 21917053822 + ... + 21917053839.

Almost surely, 2^394506968949 is an apocalyptic number.

It is an amenable number.

394506968949 is a deficient number, since it is larger than the sum of its proper divisors (175336430657).

394506968949 is a wasteful number, since it uses less digits than its factorization.

394506968949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43834107667 (or 43834107664 counting only the distinct ones).

The product of its (nonzero) digits is 453496320, while the sum is 72.

The spelling of 394506968949 in words is "three hundred ninety-four billion, five hundred six million, nine hundred sixty-eight thousand, nine hundred forty-nine".