405540196 has 6 divisors (see below), whose sum is σ = 709695350. Its totient is φ = 202770096.

The previous prime is 405540169. The next prime is 405540203. The reversal of 405540196 is 691045504.

It can be written as a sum of positive squares in only one way, i.e., 249640000 + 155900196 = 15800^2 + 12486^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50692521 + ... + 50692528.

Almost surely, 2^405540196 is an apocalyptic number.

It is an amenable number.

405540196 is a deficient number, since it is larger than the sum of its proper divisors (304155154).

405540196 is a wasteful number, since it uses less digits than its factorization.

405540196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101385053 (or 101385051 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 405540196 is about 20138.0286026215. The cubic root of 405540196 is about 740.1924237845.

The spelling of 405540196 in words is "four hundred five million, five hundred forty thousand, one hundred ninety-six".