438102997 has 4 divisors (see below), whose sum is σ = 438144876. Its totient is φ = 438061120.

The previous prime is 438102949. The next prime is 438103009. The reversal of 438102997 is 799201834.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 799201834 = 2 ⋅399600917.

It can be written as a sum of positive squares in 2 ways, for example, as 241149841 + 196953156 = 15529^2 + 14034^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-438102997 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 (438102697) 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, 9597 + ... + 31117.

It is an arithmetic number, because the mean of its divisors is an integer number (109536219).

Almost surely, 2^438102997 is an apocalyptic number.

It is an amenable number.

438102997 is a deficient number, since it is larger than the sum of its proper divisors (41879).

438102997 is a wasteful number, since it uses less digits than its factorization.

438102997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41878.

The product of its (nonzero) digits is 108864, while the sum is 43.

The square root of 438102997 is about 20930.9100853260. The cubic root of 438102997 is about 759.4958550545.

The spelling of 438102997 in words is "four hundred thirty-eight million, one hundred two thousand, nine hundred ninety-seven".