417681381 has 16 divisors (see below), whose sum is σ = 635027904. Its totient is φ = 241914624.

The previous prime is 417681349. The next prime is 417681409. The reversal of 417681381 is 183186714.

It is not a de Polignac number, because 417681381 - 2⁵ = 417681349 is a prime.

It is a super-2 number, since 2×417681381² = 348915472068134322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (417681301) 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 15 ways as a sum of consecutive naturals, for example, 314331 + ... + 315656.

It is an arithmetic number, because the mean of its divisors is an integer number (39689244).

Almost surely, 2^417681381 is an apocalyptic number.

It is an amenable number.

417681381 is a deficient number, since it is larger than the sum of its proper divisors (217346523).

417681381 is a wasteful number, since it uses less digits than its factorization.

417681381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 630020.

The product of its digits is 32256, while the sum is 39.

The square root of 417681381 is about 20437.2547324732. The cubic root of 417681381 is about 747.5066123209.

The spelling of 417681381 in words is "four hundred seventeen million, six hundred eighty-one thousand, three hundred eighty-one".