385404081 has 8 divisors (see below), whose sum is σ = 513964320. Its totient is φ = 256889952.

The previous prime is 385404007. The next prime is 385404083. The reversal of 385404081 is 180404583.

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

It is not a de Polignac number, because 385404081 - 2²¹ = 383306929 is a prime.

It is a super-2 number, since 2×385404081² = 297072611302909122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (385404083) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21490 + ... + 35108.

It is an arithmetic number, because the mean of its divisors is an integer number (64245540).

Almost surely, 2^385404081 is an apocalyptic number.

It is an amenable number.

385404081 is a deficient number, since it is larger than the sum of its proper divisors (128560239).

385404081 is a wasteful number, since it uses less digits than its factorization.

385404081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23055.

The product of its (nonzero) digits is 15360, while the sum is 33.

The square root of 385404081 is about 19631.7111072876. The cubic root of 385404081 is about 727.7330569667.

The spelling of 385404081 in words is "three hundred eighty-five million, four hundred four thousand, eighty-one".