405316641 has 4 divisors (see below), whose sum is σ = 540422192. Its totient is φ = 270211092.

The previous prime is 405316631. The next prime is 405316643. The reversal of 405316641 is 146613504.

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 not a de Polignac number, because 405316641 - 2⁶ = 405316577 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 405316599 and 405316608.

It is not an unprimeable number, because it can be changed into a prime (405316643) 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, 67552771 + ... + 67552776.

It is an arithmetic number, because the mean of its divisors is an integer number (135105548).

Almost surely, 2^405316641 is an apocalyptic number.

It is an amenable number.

405316641 is a deficient number, since it is larger than the sum of its proper divisors (135105551).

405316641 is a wasteful number, since it uses less digits than its factorization.

405316641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135105550.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 405316641 is about 20132.4772693278. The cubic root of 405316641 is about 740.0563878385.

The spelling of 405316641 in words is "four hundred five million, three hundred sixteen thousand, six hundred forty-one".