394672375249 has 2 divisors, whose sum is σ = 394672375250. Its totient is φ = 394672375248.

The previous prime is 394672375243. The next prime is 394672375271. The reversal of 394672375249 is 942573276493.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 256574667024 + 138097708225 = 506532^2 + 371615^2 .

It is a cyclic number.

It is not a de Polignac number, because 394672375249 - 2⁷ = 394672375121 is a prime.

It is not a weakly prime, because it can be changed into another prime (394672375243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 197336187624 + 197336187625.

It is an arithmetic number, because the mean of its divisors is an integer number (197336187625).

Almost surely, 2^394672375249 is an apocalyptic number.

It is an amenable number.

394672375249 is a deficient number, since it is larger than the sum of its proper divisors (1).

394672375249 is an equidigital number, since it uses as much as digits as its factorization.

394672375249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 68584320, while the sum is 61.

The spelling of 394672375249 in words is "three hundred ninety-four billion, six hundred seventy-two million, three hundred seventy-five thousand, two hundred forty-nine".