38909773 has 6 divisors (see below), whose sum is σ = 45262446. Its totient is φ = 33351192.

The previous prime is 38909771. The next prime is 38909807. The reversal of 38909773 is 37790983.

It can be written as a sum of positive squares in only one way, i.e., 38900169 + 9604 = 6237^2 + 98^2 .

It is not a de Polignac number, because 38909773 - 2¹ = 38909771 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 (38909771) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 396990 + ... + 397087.

It is an arithmetic number, because the mean of its divisors is an integer number (7543741).

Almost surely, 2^38909773 is an apocalyptic number.

It is an amenable number.

38909773 is a deficient number, since it is larger than the sum of its proper divisors (6352673).

38909773 is an equidigital number, since it uses as much as digits as its factorization.

38909773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 794091 (or 794084 counting only the distinct ones).

The product of its (nonzero) digits is 285768, while the sum is 46.

The square root of 38909773 is about 6237.7698739213. The cubic root of 38909773 is about 338.8594219932.

The spelling of 38909773 in words is "thirty-eight million, nine hundred nine thousand, seven hundred seventy-three".