438971906 has 8 divisors (see below), whose sum is σ = 659066880. Its totient is φ = 219282948.

The previous prime is 438971899. The next prime is 438971933. The reversal of 438971906 is 609179834.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 98786 + ... + 103133.

It is an arithmetic number, because the mean of its divisors is an integer number (82383360).

Almost surely, 2^438971906 is an apocalyptic number.

438971906 is a deficient number, since it is larger than the sum of its proper divisors (220094974).

438971906 is a wasteful number, since it uses less digits than its factorization.

438971906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203008.

The product of its (nonzero) digits is 326592, while the sum is 47.

The square root of 438971906 is about 20951.6564022991. The cubic root of 438971906 is about 759.9976373426.

The spelling of 438971906 in words is "four hundred thirty-eight million, nine hundred seventy-one thousand, nine hundred six".