407491 has 8 divisors (see below), whose sum is σ = 486144. Its totient is φ = 333960.

The previous prime is 407489. The next prime is 407501. The reversal of 407491 is 194704.

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

It is not a de Polignac number, because 407491 - 2¹ = 407489 is a prime.

It is a Duffinian number.

407491 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (407401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1105 + ... + 1426.

It is an arithmetic number, because the mean of its divisors is an integer number (60768).

2⁴⁰⁷⁴⁹¹ is an apocalyptic number.

407491 is a deficient number, since it is larger than the sum of its proper divisors (78653).

407491 is a wasteful number, since it uses less digits than its factorization.

407491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2561.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 407491 is about 638.3502173572. The cubic root of 407491 is about 74.1377395642.

It can be divided in two parts, 407 and 491, that added together give a palindrome (898).

The spelling of 407491 in words is "four hundred seven thousand, four hundred ninety-one".