394109901 has 8 divisors (see below), whose sum is σ = 583866560. Its totient is φ = 262739916.

The previous prime is 394109893. The next prime is 394109927. The reversal of 394109901 is 109901493.

It is not a de Polignac number, because 394109901 - 2³ = 394109893 is a prime.

It is a super-2 number, since 2×394109901² = 310645228132459602, which 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 (394109201) 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, 7298305 + ... + 7298358.

It is an arithmetic number, because the mean of its divisors is an integer number (72983320).

Almost surely, 2^394109901 is an apocalyptic number.

It is an amenable number.

394109901 is a deficient number, since it is larger than the sum of its proper divisors (189756659).

394109901 is a wasteful number, since it uses less digits than its factorization.

394109901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14596672 (or 14596666 counting only the distinct ones).

The product of its (nonzero) digits is 8748, while the sum is 36.

The square root of 394109901 is about 19852.2014144528. The cubic root of 394109901 is about 733.1718498197.

The spelling of 394109901 in words is "three hundred ninety-four million, one hundred nine thousand, nine hundred one".