394787995 has 8 divisors (see below), whose sum is σ = 541423584. Its totient is φ = 270711744.

The previous prime is 394787993. The next prime is 394788001. The reversal of 394787995 is 599787493.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 394787995 - 2¹ = 394787993 is a prime.

It is a super-2 number, since 2×394787995² = 311715121992240050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (394787993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5639794 + ... + 5639863.

It is an arithmetic number, because the mean of its divisors is an integer number (67677948).

Almost surely, 2^394787995 is an apocalyptic number.

394787995 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

394787995 is a deficient number, since it is larger than the sum of its proper divisors (146635589).

394787995 is a wasteful number, since it uses less digits than its factorization.

394787995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11279669.

The product of its digits is 17146080, while the sum is 61.

The square root of 394787995 is about 19869.2726338938. The cubic root of 394787995 is about 733.5921002546.

The spelling of 394787995 in words is "three hundred ninety-four million, seven hundred eighty-seven thousand, nine hundred ninety-five".