438422959 has 4 divisors (see below), whose sum is σ = 472147816. Its totient is φ = 404698104.

The previous prime is 438422917. The next prime is 438422983. The reversal of 438422959 is 959224834.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 959224834 = 2 ⋅479612417.

It is a cyclic number.

It is not a de Polignac number, because 438422959 - 2²¹ = 436325807 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 (438422059) 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, 16862409 + ... + 16862434.

It is an arithmetic number, because the mean of its divisors is an integer number (118036954).

Almost surely, 2^438422959 is an apocalyptic number.

438422959 is a deficient number, since it is larger than the sum of its proper divisors (33724857).

438422959 is a wasteful number, since it uses less digits than its factorization.

438422959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33724856.

The product of its digits is 622080, while the sum is 46.

The square root of 438422959 is about 20938.5519795424. The cubic root of 438422959 is about 759.6807055569.

The spelling of 438422959 in words is "four hundred thirty-eight million, four hundred twenty-two thousand, nine hundred fifty-nine".