38972707 has 4 divisors (see below), whose sum is σ = 39170736. Its totient is φ = 38774680.

The previous prime is 38972699. The next prime is 38972711. The reversal of 38972707 is 70727983.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70727983 = 199 ⋅355417.

It is a cyclic number.

It is not a de Polignac number, because 38972707 - 2³ = 38972699 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38972777) 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, 98719 + ... + 99112.

It is an arithmetic number, because the mean of its divisors is an integer number (9792684).

Almost surely, 2^38972707 is an apocalyptic number.

38972707 is a deficient number, since it is larger than the sum of its proper divisors (198029).

38972707 is a wasteful number, since it uses less digits than its factorization.

38972707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198028.

The product of its (nonzero) digits is 148176, while the sum is 43.

The square root of 38972707 is about 6242.8124271037. The cubic root of 38972707 is about 339.0420178627.

The spelling of 38972707 in words is "thirty-eight million, nine hundred seventy-two thousand, seven hundred seven".