394141397 has 16 divisors (see below), whose sum is σ = 435462720. Its totient is φ = 354436992.

The previous prime is 394141393. The next prime is 394141399. The reversal of 394141397 is 793141493.

It is a happy number.

It is not a de Polignac number, because 394141397 - 2² = 394141393 is a prime.

It is a super-3 number, since 3×394141397³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (394141393) 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 15 ways as a sum of consecutive naturals, for example, 305129 + ... + 306417.

It is an arithmetic number, because the mean of its divisors is an integer number (27216420).

Almost surely, 2^394141397 is an apocalyptic number.

It is an amenable number.

394141397 is a deficient number, since it is larger than the sum of its proper divisors (41321323).

394141397 is a wasteful number, since it uses less digits than its factorization.

394141397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1892.

The product of its digits is 81648, while the sum is 41.

The square root of 394141397 is about 19852.9946607558. The cubic root of 394141397 is about 733.1913802141.

The spelling of 394141397 in words is "three hundred ninety-four million, one hundred forty-one thousand, three hundred ninety-seven".