38897739 has 12 divisors (see below), whose sum is σ = 58266936. Its totient is φ = 25931664.

The previous prime is 38897737. The next prime is 38897743. The reversal of 38897739 is 93779883.

It is not a de Polignac number, because 38897739 - 2¹ = 38897737 is a prime.

It is not an unprimeable number, because it can be changed into a prime (38897737) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 79794 + ... + 80279.

It is an arithmetic number, because the mean of its divisors is an integer number (4855578).

Almost surely, 2^38897739 is an apocalyptic number.

38897739 is a deficient number, since it is larger than the sum of its proper divisors (19369197).

38897739 is an equidigital number, since it uses as much as digits as its factorization.

38897739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160088 (or 160076 counting only the distinct ones).

The product of its digits is 2286144, while the sum is 54.

The square root of 38897739 is about 6236.8051917628. The cubic root of 38897739 is about 338.8244842861.

It can be divided in two parts, 3889 and 7739, that added together give a triangular number (11628 = T₁₅₂).

The spelling of 38897739 in words is "thirty-eight million, eight hundred ninety-seven thousand, seven hundred thirty-nine".