438480197 has 4 divisors (see below), whose sum is σ = 440063436. Its totient is φ = 436896960.

The previous prime is 438480191. The next prime is 438480241. The reversal of 438480197 is 791084834.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 221831236 + 216648961 = 14894^2 + 14719^2 .

It is a cyclic number.

It is not a de Polignac number, because 438480197 - 2⁴ = 438480181 is a prime.

It is a super-2 number, since 2×438480197² = 384529766322317618, 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 (438480191) 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, 791204 + ... + 791757.

It is an arithmetic number, because the mean of its divisors is an integer number (110015859).

Almost surely, 2^438480197 is an apocalyptic number.

It is an amenable number.

438480197 is a deficient number, since it is larger than the sum of its proper divisors (1583239).

438480197 is a wasteful number, since it uses less digits than its factorization.

438480197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1583238.

The product of its (nonzero) digits is 193536, while the sum is 44.

The square root of 438480197 is about 20939.9187438729. The cubic root of 438480197 is about 759.7137639777.

The spelling of 438480197 in words is "four hundred thirty-eight million, four hundred eighty thousand, one hundred ninety-seven".