83438570 has 8 divisors (see below), whose sum is σ = 150189444. Its totient is φ = 33375424.

The previous prime is 83438569. The next prime is 83438573. The reversal of 83438570 is 7583438.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 79370281 + 4068289 = 8909^2 + 2017^2 .

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

It is not an unprimeable number, because it can be changed into a prime (83438573) 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, 4171919 + ... + 4171938.

Almost surely, 2^83438570 is an apocalyptic number.

83438570 is a deficient number, since it is larger than the sum of its proper divisors (66750874).

83438570 is a wasteful number, since it uses less digits than its factorization.

83438570 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8343864.

The product of its (nonzero) digits is 80640, while the sum is 38.

The square root of 83438570 is about 9134.4715227538. The cubic root of 83438570 is about 436.9740204172.

The spelling of 83438570 in words is "eighty-three million, four hundred thirty-eight thousand, five hundred seventy".