536440421 has 4 divisors (see below), whose sum is σ = 585207744. Its totient is φ = 487673100.

The previous prime is 536440409. The next prime is 536440439. The reversal of 536440421 is 124044635.

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 536440421 - 2¹⁴ = 536424037 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (536440481) 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, 24383645 + ... + 24383666.

It is an arithmetic number, because the mean of its divisors is an integer number (146301936).

Almost surely, 2^536440421 is an apocalyptic number.

It is an amenable number.

536440421 is a deficient number, since it is larger than the sum of its proper divisors (48767323).

536440421 is a wasteful number, since it uses less digits than its factorization.

536440421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48767322.

The product of its (nonzero) digits is 11520, while the sum is 29.

The square root of 536440421 is about 23161.1834973949. The cubic root of 536440421 is about 812.5320456315.

The spelling of 536440421 in words is "five hundred thirty-six million, four hundred forty thousand, four hundred twenty-one".