401634533 has 4 divisors (see below), whose sum is σ = 419096928. Its totient is φ = 384172140.

The previous prime is 401634529. The next prime is 401634547. The reversal of 401634533 is 335436104.

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 401634533 - 2² = 401634529 is a prime.

It is a super-2 number, since 2×401634533² = 322620596196256178, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 401634496 and 401634505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401634133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8731163 + ... + 8731208.

It is an arithmetic number, because the mean of its divisors is an integer number (104774232).

Almost surely, 2^401634533 is an apocalyptic number.

It is an amenable number.

401634533 is a deficient number, since it is larger than the sum of its proper divisors (17462395).

401634533 is a wasteful number, since it uses less digits than its factorization.

401634533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17462394.

The product of its (nonzero) digits is 12960, while the sum is 29.

The square root of 401634533 is about 20040.8216647921. The cubic root of 401634533 is about 737.8085476354.

The spelling of 401634533 in words is "four hundred one million, six hundred thirty-four thousand, five hundred thirty-three".