438649347 has 4 divisors (see below), whose sum is σ = 584865800. Its totient is φ = 292432896.

The previous prime is 438649339. The next prime is 438649361. The reversal of 438649347 is 743946834.

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

It is not a de Polignac number, because 438649347 - 2³ = 438649339 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 438649296 and 438649305.

It is not an unprimeable number, because it can be changed into a prime (438649327) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73108222 + ... + 73108227.

It is an arithmetic number, because the mean of its divisors is an integer number (146216450).

Almost surely, 2^438649347 is an apocalyptic number.

438649347 is a deficient number, since it is larger than the sum of its proper divisors (146216453).

438649347 is a wasteful number, since it uses less digits than its factorization.

438649347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146216452.

The product of its digits is 1741824, while the sum is 48.

The square root of 438649347 is about 20943.9572908273. The cubic root of 438649347 is about 759.8114415645.

The spelling of 438649347 in words is "four hundred thirty-eight million, six hundred forty-nine thousand, three hundred forty-seven".