381426404 has 6 divisors (see below), whose sum is σ = 667496214. Its totient is φ = 190713200.

The previous prime is 381426401. The next prime is 381426439. The reversal of 381426404 is 404624183.

It can be written as a sum of positive squares in only one way, i.e., 380172004 + 1254400 = 19498^2 + 1120^2 .

It is a super-2 number, since 2×381426404² = 290972203336742432, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (381426401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 47678297 + ... + 47678304.

It is an arithmetic number, because the mean of its divisors is an integer number (111249369).

Almost surely, 2^381426404 is an apocalyptic number.

It is an amenable number.

381426404 is a deficient number, since it is larger than the sum of its proper divisors (286069810).

381426404 is a wasteful number, since it uses less digits than its factorization.

381426404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95356605 (or 95356603 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 32.

The square root of 381426404 is about 19530.1409109100. The cubic root of 381426404 is about 725.2207993360.

The spelling of 381426404 in words is "three hundred eighty-one million, four hundred twenty-six thousand, four hundred four".