394980376237 has 4 divisors (see below), whose sum is σ = 402432836220. Its totient is φ = 387527916256.

The previous prime is 394980376223. The next prime is 394980376249. The reversal of 394980376237 is 732673089493.

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

It can be written as a sum of positive squares in 2 ways, for example, as 95398205956 + 299582170281 = 308866^2 + 547341^2 .

It is a cyclic number.

It is not a de Polignac number, because 394980376237 - 2¹⁹ = 394979851949 is a prime.

It is a super-2 number, since 2×394980376237² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (394980376537) 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, 3726229912 + ... + 3726230017.

It is an arithmetic number, because the mean of its divisors is an integer number (100608209055).

Almost surely, 2^394980376237 is an apocalyptic number.

It is an amenable number.

394980376237 is a deficient number, since it is larger than the sum of its proper divisors (7452459983).

394980376237 is an equidigital number, since it uses as much as digits as its factorization.

394980376237 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7452459982.

The product of its (nonzero) digits is 41150592, while the sum is 61.

The spelling of 394980376237 in words is "three hundred ninety-four billion, nine hundred eighty million, three hundred seventy-six thousand, two hundred thirty-seven".