38861897 has 4 divisors (see below), whose sum is σ = 40907280. Its totient is φ = 36816516.

The previous prime is 38861887. The next prime is 38861899. The reversal of 38861897 is 79816883.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 38861897 - 2⁶ = 38861833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38861899) 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, 1022663 + ... + 1022700.

It is an arithmetic number, because the mean of its divisors is an integer number (10226820).

Almost surely, 2^38861897 is an apocalyptic number.

It is an amenable number.

38861897 is a deficient number, since it is larger than the sum of its proper divisors (2045383).

38861897 is a wasteful number, since it uses less digits than its factorization.

38861897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2045382.

The product of its digits is 580608, while the sum is 50.

The square root of 38861897 is about 6233.9311032446. The cubic root of 38861897 is about 338.7203832987.

The spelling of 38861897 in words is "thirty-eight million, eight hundred sixty-one thousand, eight hundred ninety-seven".