407045 has 4 divisors (see below), whose sum is σ = 488460. Its totient is φ = 325632.

The previous prime is 407023. The next prime is 407047. The reversal of 407045 is 540704.

It is a Cunningham number, because it is equal to 638²+1.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 145924 + 261121 = 382^2 + 511^2 .

It is a cyclic number.

It is not a de Polignac number, because 407045 - 2⁶ = 406981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (407047) 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, 40700 + ... + 40709.

It is an arithmetic number, because the mean of its divisors is an integer number (122115).

2⁴⁰⁷⁰⁴⁵ is an apocalyptic number.

It is an amenable number.

407045 is a deficient number, since it is larger than the sum of its proper divisors (81415).

407045 is an equidigital number, since it uses as much as digits as its factorization.

407045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81414.

The product of its (nonzero) digits is 560, while the sum is 20.

The square root of 407045 is about 638.0007836986. Note that the first 3 decimals coincide. The cubic root of 407045 is about 74.1106817048.

Adding to 407045 its reverse (540704), we get a palindrome (947749).

The spelling of 407045 in words is "four hundred seven thousand, forty-five".