405426005 has 8 divisors (see below), whose sum is σ = 490225824. Its totient is φ = 321864400.

The previous prime is 405425987. The next prime is 405426017. The reversal of 405426005 is 500624504.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 405426005 - 2¹⁶ = 405360469 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 308831 + ... + 310140.

It is an arithmetic number, because the mean of its divisors is an integer number (61278228).

Almost surely, 2^405426005 is an apocalyptic number.

It is an amenable number.

405426005 is a deficient number, since it is larger than the sum of its proper divisors (84799819).

405426005 is a wasteful number, since it uses less digits than its factorization.

405426005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 619107.

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 405426005 is about 20135.1931950006. The cubic root of 405426005 is about 740.1229434153.

The spelling of 405426005 in words is "four hundred five million, four hundred twenty-six thousand, five".