405434164 has 6 divisors (see below), whose sum is σ = 709509794. Its totient is φ = 202717080.

The previous prime is 405434129. The next prime is 405434171. The reversal of 405434164 is 461434504.

It can be written as a sum of positive squares in only one way, i.e., 404331664 + 1102500 = 20108^2 + 1050^2 .

It is a super-2 number, since 2×405434164² = 328753722676757792, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50679267 + ... + 50679274.

Almost surely, 2^405434164 is an apocalyptic number.

It is an amenable number.

405434164 is a deficient number, since it is larger than the sum of its proper divisors (304075630).

405434164 is a wasteful number, since it uses less digits than its factorization.

405434164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101358545 (or 101358543 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 31.

The square root of 405434164 is about 20135.3957994374. The cubic root of 405434164 is about 740.1279082527.

Adding to 405434164 its reverse (461434504), we get a palindrome (866868668).

The spelling of 405434164 in words is "four hundred five million, four hundred thirty-four thousand, one hundred sixty-four".