405730001 has 4 divisors (see below), whose sum is σ = 407653104. Its totient is φ = 403806900.

The previous prime is 405729977. The next prime is 405730027. The reversal of 405730001 is 100037504.

It is a happy number.

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 not a de Polignac number, because 405730001 - 2²⁶ = 338621137 is a prime.

It is a super-2 number, since 2×405730001² = 329233667422920002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (405733001) 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, 961235 + ... + 961656.

It is an arithmetic number, because the mean of its divisors is an integer number (101913276).

Almost surely, 2^405730001 is an apocalyptic number.

It is an amenable number.

405730001 is a deficient number, since it is larger than the sum of its proper divisors (1923103).

405730001 is a wasteful number, since it uses less digits than its factorization.

405730001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1923102.

The product of its (nonzero) digits is 420, while the sum is 20.

The square root of 405730001 is about 20142.7406526520. The cubic root of 405730001 is about 740.3078832070.

Adding to 405730001 its reverse (100037504), we get a palindrome (505767505).

The spelling of 405730001 in words is "four hundred five million, seven hundred thirty thousand, one".