83947538 has 8 divisors (see below), whose sum is σ = 125998860. Its totient is φ = 41947920.

The previous prime is 83947537. The next prime is 83947571. The reversal of 83947538 is 83574938.

It can be written as a sum of positive squares in 2 ways, for example, as 76090729 + 7856809 = 8723^2 + 2803^2 .

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

It is a super-2 number, since 2×83947538² = 14094378272522888, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 83947492 and 83947501.

It is not an unprimeable number, because it can be changed into a prime (83947537) 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, 8573 + ... + 15536.

Almost surely, 2^83947538 is an apocalyptic number.

83947538 is a deficient number, since it is larger than the sum of its proper divisors (42051322).

83947538 is a wasteful number, since it uses less digits than its factorization.

83947538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25852.

The product of its digits is 725760, while the sum is 47.

The square root of 83947538 is about 9162.2889061631. The cubic root of 83947538 is about 437.8607210597.

The spelling of 83947538 in words is "eighty-three million, nine hundred forty-seven thousand, five hundred thirty-eight".