394402101 has 8 divisors (see below), whose sum is σ = 527728800. Its totient is φ = 262005072.

The previous prime is 394402087. The next prime is 394402103. The reversal of 394402101 is 101204493.

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

It is not a de Polignac number, because 394402101 - 2²¹ = 392304949 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (394402103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 231426 + ... + 233123.

It is an arithmetic number, because the mean of its divisors is an integer number (65966100).

Almost surely, 2^394402101 is an apocalyptic number.

It is an amenable number.

394402101 is a deficient number, since it is larger than the sum of its proper divisors (133326699).

394402101 is a wasteful number, since it uses less digits than its factorization.

394402101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 464835.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 394402101 is about 19859.5594362010. The cubic root of 394402101 is about 733.3530005515.

Adding to 394402101 its reverse (101204493), we get a palindrome (495606594).

The spelling of 394402101 in words is "three hundred ninety-four million, four hundred two thousand, one hundred one".