405906713 has 4 divisors (see below), whose sum is σ = 415346448. Its totient is φ = 396466980.

The previous prime is 405906689. The next prime is 405906731. The reversal of 405906713 is 317609504.

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-405906713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (405906763) 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, 4719803 + ... + 4719888.

It is an arithmetic number, because the mean of its divisors is an integer number (103836612).

Almost surely, 2^405906713 is an apocalyptic number.

405906713 is a gapful number since it is divisible by the number (43) formed by its first and last digit.

It is an amenable number.

405906713 is a deficient number, since it is larger than the sum of its proper divisors (9439735).

405906713 is an equidigital number, since it uses as much as digits as its factorization.

405906713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9439734.

The product of its (nonzero) digits is 22680, while the sum is 35.

The square root of 405906713 is about 20147.1266685848. The cubic root of 405906713 is about 740.4153457217.

The spelling of 405906713 in words is "four hundred five million, nine hundred six thousand, seven hundred thirteen".