405776413 has 16 divisors (see below), whose sum is σ = 471160960. Its totient is φ = 342268416.

The previous prime is 405776401. The next prime is 405776429. The reversal of 405776413 is 314677504.

It is a de Polignac number, because none of the positive numbers 2^k-405776413 is a prime.

It is a super-4 number, since 4×405776413⁴ (a number of 36 digits) contains 4444 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405776473) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 401653 + ... + 402661.

It is an arithmetic number, because the mean of its divisors is an integer number (29447560).

Almost surely, 2^405776413 is an apocalyptic number.

It is an amenable number.

405776413 is a deficient number, since it is larger than the sum of its proper divisors (65384547).

405776413 is a wasteful number, since it uses less digits than its factorization.

405776413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1876.

The product of its (nonzero) digits is 70560, while the sum is 37.

The square root of 405776413 is about 20143.8926972917. The cubic root of 405776413 is about 740.3361104019.

The spelling of 405776413 in words is "four hundred five million, seven hundred seventy-six thousand, four hundred thirteen".