38989810 has 8 divisors (see below), whose sum is σ = 70181676. Its totient is φ = 15595920.

The previous prime is 38989801. The next prime is 38989817. The reversal of 38989810 is 1898983.

It can be written as a sum of positive squares in 2 ways, for example, as 32182929 + 6806881 = 5673^2 + 2609^2 .

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

It is a super-2 number, since 2×38989810² = 3040410567672200, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (38989817) 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, 1949481 + ... + 1949500.

Almost surely, 2^38989810 is an apocalyptic number.

38989810 is a deficient number, since it is larger than the sum of its proper divisors (31191866).

38989810 is a wasteful number, since it uses less digits than its factorization.

38989810 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3898988.

The product of its (nonzero) digits is 124416, while the sum is 46.

The square root of 38989810 is about 6244.1820921559. The cubic root of 38989810 is about 339.0916063059.

The spelling of 38989810 in words is "thirty-eight million, nine hundred eighty-nine thousand, eight hundred ten".