407081 has 4 divisors (see below), whose sum is σ = 416592. Its totient is φ = 397572.

The previous prime is 407059. The next prime is 407083. The reversal of 407081 is 180704.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-407081 is a prime.

It is a super-2 number, since 2×407081² = 331429881122, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (407083) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4691 + ... + 4776.

It is an arithmetic number, because the mean of its divisors is an integer number (104148).

2⁴⁰⁷⁰⁸¹ is an apocalyptic number.

It is an amenable number.

407081 is a deficient number, since it is larger than the sum of its proper divisors (9511).

407081 is an equidigital number, since it uses as much as digits as its factorization.

407081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9510.

The product of its (nonzero) digits is 224, while the sum is 20.

The square root of 407081 is about 638.0289962063. The cubic root of 407081 is about 74.1128664804.

Adding to 407081 its reverse (180704), we get a palindrome (587785).

The spelling of 407081 in words is "four hundred seven thousand, eighty-one".