405051213 has 16 divisors (see below), whose sum is σ = 617510016. Its totient is φ = 231349440.

The previous prime is 405051209. The next prime is 405051277. The reversal of 405051213 is 312150504.

It is not a de Polignac number, because 405051213 - 2² = 405051209 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 405051213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405052213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69895 + ... + 75467.

It is an arithmetic number, because the mean of its divisors is an integer number (38594376).

Almost surely, 2^405051213 is an apocalyptic number.

It is an amenable number.

405051213 is a deficient number, since it is larger than the sum of its proper divisors (212458803).

405051213 is a wasteful number, since it uses less digits than its factorization.

405051213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9044.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 405051213 is about 20125.8841544912. The cubic root of 405051213 is about 739.8948066931.

The spelling of 405051213 in words is "four hundred five million, fifty-one thousand, two hundred thirteen".