438285977 has 4 divisors (see below), whose sum is σ = 461353680. Its totient is φ = 415218276.

The previous prime is 438285949. The next prime is 438285983. The reversal of 438285977 is 779582834.

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 438285977 - 2¹⁰ = 438284953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (438285937) 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, 11533823 + ... + 11533860.

It is an arithmetic number, because the mean of its divisors is an integer number (115338420).

Almost surely, 2^438285977 is an apocalyptic number.

It is an amenable number.

438285977 is a deficient number, since it is larger than the sum of its proper divisors (23067703).

438285977 is a wasteful number, since it uses less digits than its factorization.

438285977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23067702.

The product of its digits is 3386880, while the sum is 53.

The square root of 438285977 is about 20935.2806764084. The cubic root of 438285977 is about 759.6015784491.

The spelling of 438285977 in words is "four hundred thirty-eight million, two hundred eighty-five thousand, nine hundred seventy-seven".