938870986 has 4 divisors (see below), whose sum is σ = 1408306482. Its totient is φ = 469435492.

The previous prime is 938870983. The next prime is 938871029. The reversal of 938870986 is 689078839.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 689078839 = 11789 ⋅58451.

It can be written as a sum of positive squares in only one way, i.e., 757295361 + 181575625 = 27519^2 + 13475^2 .

It is a super-2 number, since 2×938870986² = 1762957456705224392, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 938870986.

It is not an unprimeable number, because it can be changed into a prime (938870983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 234717745 + ... + 234717748.

Almost surely, 2^938870986 is an apocalyptic number.

938870986 is a deficient number, since it is larger than the sum of its proper divisors (469435496).

938870986 is a wasteful number, since it uses less digits than its factorization.

938870986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 469435495.

The product of its (nonzero) digits is 5225472, while the sum is 58.

The square root of 938870986 is about 30641.0017133905. The cubic root of 938870986 is about 979.1937649174.

The spelling of 938870986 in words is "nine hundred thirty-eight million, eight hundred seventy thousand, nine hundred eighty-six".