438790513 has 8 divisors (see below), whose sum is σ = 502965632. Its totient is φ = 374988096.

The previous prime is 438790489. The next prime is 438790531. The reversal of 438790513 is 315097834.

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

It is a de Polignac number, because none of the positive numbers 2^k-438790513 is a prime.

It is a super-2 number, since 2×438790513² = 385074228597606338, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (438790813) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90645 + ... + 95362.

It is an arithmetic number, because the mean of its divisors is an integer number (62870704).

Almost surely, 2^438790513 is an apocalyptic number.

It is an amenable number.

438790513 is a deficient number, since it is larger than the sum of its proper divisors (64175119).

438790513 is a wasteful number, since it uses less digits than its factorization.

438790513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186351.

The product of its (nonzero) digits is 90720, while the sum is 40.

The square root of 438790513 is about 20947.3271087268. The cubic root of 438790513 is about 759.8929402518.

The spelling of 438790513 in words is "four hundred thirty-eight million, seven hundred ninety thousand, five hundred thirteen".