381402401 has 8 divisors (see below), whose sum is σ = 392014080. Its totient is φ = 370806768.

The previous prime is 381402397. The next prime is 381402479. The reversal of 381402401 is 104204183.

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 381402401 - 2² = 381402397 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (381402001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56720 + ... + 63086.

It is an arithmetic number, because the mean of its divisors is an integer number (49001760).

Almost surely, 2^381402401 is an apocalyptic number.

It is an amenable number.

381402401 is a deficient number, since it is larger than the sum of its proper divisors (10611679).

381402401 is a wasteful number, since it uses less digits than its factorization.

381402401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8023.

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 381402401 is about 19529.5263895467. The cubic root of 381402401 is about 725.2055864056.

Adding to 381402401 its reverse (104204183), we get a palindrome (485606584).

The spelling of 381402401 in words is "three hundred eighty-one million, four hundred two thousand, four hundred one".