38703989 has 4 divisors (see below), whose sum is σ = 38848140. Its totient is φ = 38559840.

The previous prime is 38703971. The next prime is 38703991. The reversal of 38703989 is 98930783.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3301489 + 35402500 = 1817^2 + 5950^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38703989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38703919) 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, 71672 + ... + 72209.

It is an arithmetic number, because the mean of its divisors is an integer number (9712035).

Almost surely, 2^38703989 is an apocalyptic number.

It is an amenable number.

38703989 is a deficient number, since it is larger than the sum of its proper divisors (144151).

38703989 is a wasteful number, since it uses less digits than its factorization.

38703989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144150.

The product of its (nonzero) digits is 326592, while the sum is 47.

The square root of 38703989 is about 6221.2530088399. The cubic root of 38703989 is about 338.2609850130.

The spelling of 38703989 in words is "thirty-eight million, seven hundred three thousand, nine hundred eighty-nine".