38996971 has 4 divisors (see below), whose sum is σ = 41996752. Its totient is φ = 35997192.

The previous prime is 38996957. The next prime is 38996999. The reversal of 38996971 is 17969983.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17969983 = 293 ⋅61331.

It is a cyclic number.

It is not a de Polignac number, because 38996971 - 2⁵ = 38996939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38996921) 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, 1499871 + ... + 1499896.

It is an arithmetic number, because the mean of its divisors is an integer number (10499188).

Almost surely, 2^38996971 is an apocalyptic number.

38996971 is a deficient number, since it is larger than the sum of its proper divisors (2999781).

38996971 is a wasteful number, since it uses less digits than its factorization.

38996971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2999780.

The product of its digits is 734832, while the sum is 52.

The square root of 38996971 is about 6244.7554796005. The cubic root of 38996971 is about 339.1123646045.

The spelling of 38996971 in words is "thirty-eight million, nine hundred ninety-six thousand, nine hundred seventy-one".