440525213 has 4 divisors (see below), whose sum is σ = 440569728. Its totient is φ = 440480700.

The previous prime is 440525191. The next prime is 440525227. The reversal of 440525213 is 312525044.

It is a happy number.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 440525213 - 2¹⁴ = 440508829 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 (440525243) 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, 20 + ... + 29682.

It is an arithmetic number, because the mean of its divisors is an integer number (110142432).

Almost surely, 2^440525213 is an apocalyptic number.

It is an amenable number.

440525213 is a deficient number, since it is larger than the sum of its proper divisors (44515).

440525213 is a wasteful number, since it uses less digits than its factorization.

440525213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44514.

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 440525213 is about 20988.6925033457. The cubic root of 440525213 is about 760.8930021327.

The spelling of 440525213 in words is "four hundred forty million, five hundred twenty-five thousand, two hundred thirteen".