405474101 has 4 divisors (see below), whose sum is σ = 405630732. Its totient is φ = 405317472.

The previous prime is 405474067. The next prime is 405474131. The reversal of 405474101 is 101474504.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 189090001 + 216384100 = 13751^2 + 14710^2 .

It is a cyclic number.

It is not a de Polignac number, because 405474101 - 2⁶ = 405474037 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405474131) 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 3 ways as a sum of consecutive naturals, for example, 74366 + ... + 79631.

It is an arithmetic number, because the mean of its divisors is an integer number (101407683).

Almost surely, 2^405474101 is an apocalyptic number.

It is an amenable number.

405474101 is a deficient number, since it is larger than the sum of its proper divisors (156631).

405474101 is a wasteful number, since it uses less digits than its factorization.

405474101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156630.

The product of its (nonzero) digits is 2240, while the sum is 26.

The square root of 405474101 is about 20136.3874863393. The cubic root of 405474101 is about 740.1522093768.

The spelling of 405474101 in words is "four hundred five million, four hundred seventy-four thousand, one hundred one".