438493969 has 4 divisors (see below), whose sum is σ = 442751296. Its totient is φ = 434236644.

The previous prime is 438493967. The next prime is 438493981. The reversal of 438493969 is 969394834.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 438493969 - 2¹ = 438493967 is a prime.

It is a super-2 number, since 2×438493969² = 384553921698745922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (438493967) 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, 2128509 + ... + 2128714.

It is an arithmetic number, because the mean of its divisors is an integer number (110687824).

Almost surely, 2^438493969 is an apocalyptic number.

It is an amenable number.

438493969 is a deficient number, since it is larger than the sum of its proper divisors (4257327).

438493969 is a wasteful number, since it uses less digits than its factorization.

438493969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4257326.

The product of its digits is 5038848, while the sum is 55.

The square root of 438493969 is about 20940.2475868840. The cubic root of 438493969 is about 759.7217177147.

The spelling of 438493969 in words is "four hundred thirty-eight million, four hundred ninety-three thousand, nine hundred sixty-nine".