436285381 has 4 divisors (see below), whose sum is σ = 498611872. Its totient is φ = 373958892.

The previous prime is 436285373. The next prime is 436285427. The reversal of 436285381 is 183582634.

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 an emirpimes, since its reverse is a distinct semiprime: 183582634 = 2 ⋅91791317.

It is a cyclic number.

It is not a de Polignac number, because 436285381 - 2³ = 436285373 is a prime.

It is a super-2 number, since 2×436285381² = 380689867348630322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (436285081) 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, 31163235 + ... + 31163248.

It is an arithmetic number, because the mean of its divisors is an integer number (124652968).

Almost surely, 2^436285381 is an apocalyptic number.

It is an amenable number.

436285381 is a deficient number, since it is larger than the sum of its proper divisors (62326491).

436285381 is an equidigital number, since it uses as much as digits as its factorization.

436285381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62326490.

The product of its digits is 138240, while the sum is 40.

The square root of 436285381 is about 20887.4455355364. The cubic root of 436285381 is about 758.4440587451. Note that the first 3 decimals are identical.

The spelling of 436285381 in words is "four hundred thirty-six million, two hundred eighty-five thousand, three hundred eighty-one".