438508654 has 4 divisors (see below), whose sum is σ = 657762984. Its totient is φ = 219254326.

The previous prime is 438508643. The next prime is 438508661. The reversal of 438508654 is 456805834.

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

It is a self number, because there is not a number n which added to its sum of digits gives 438508654.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 109627162 + ... + 109627165.

It is an arithmetic number, because the mean of its divisors is an integer number (164440746).

Almost surely, 2^438508654 is an apocalyptic number.

438508654 is a deficient number, since it is larger than the sum of its proper divisors (219254330).

438508654 is a wasteful number, since it uses less digits than its factorization.

438508654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219254329.

The product of its (nonzero) digits is 460800, while the sum is 43.

The square root of 438508654 is about 20940.5982245016. The cubic root of 438508654 is about 759.7301985526.

The spelling of 438508654 in words is "four hundred thirty-eight million, five hundred eight thousand, six hundred fifty-four".