407489381 has 8 divisors (see below), whose sum is σ = 439858944. Its totient is φ = 375266160.

The previous prime is 407489351. The next prime is 407489417. The reversal of 407489381 is 183984704.

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 407489381 - 2²² = 403295077 is a prime.

It is a super-2 number, since 2×407489381² = 332095191255526322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (407489351) 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, 30761 + ... + 41966.

It is an arithmetic number, because the mean of its divisors is an integer number (54982368).

Almost surely, 2^407489381 is an apocalyptic number.

It is an amenable number.

407489381 is a deficient number, since it is larger than the sum of its proper divisors (32369563).

407489381 is a wasteful number, since it uses less digits than its factorization.

407489381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73171.

The product of its (nonzero) digits is 193536, while the sum is 44.

The square root of 407489381 is about 20186.3662158398. The cubic root of 407489381 is about 741.3764137870.

The spelling of 407489381 in words is "four hundred seven million, four hundred eighty-nine thousand, three hundred eighty-one".