38967561 has 40 divisors (see below), whose sum is σ = 61550280. Its totient is φ = 24530688.

The previous prime is 38967541. The next prime is 38967571. The reversal of 38967561 is 16576983.

It is a happy number.

38967561 is a `hidden beast` number, since 3 + 89 + 6 + 7 + 561 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 1071225 + 37896336 = 1035^2 + 6156^2 .

It is not a de Polignac number, because 38967561 - 2⁷ = 38967433 is a prime.

It is not an unprimeable number, because it can be changed into a prime (38967541) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 124341 + ... + 124653.

It is an arithmetic number, because the mean of its divisors is an integer number (1538757).

Almost surely, 2^38967561 is an apocalyptic number.

It is an amenable number.

38967561 is a deficient number, since it is larger than the sum of its proper divisors (22582719).

38967561 is a wasteful number, since it uses less digits than its factorization.

38967561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 407 (or 398 counting only the distinct ones).

The product of its digits is 272160, while the sum is 45.

The square root of 38967561 is about 6242.4002595156. The cubic root of 38967561 is about 339.0270947096.

The spelling of 38967561 in words is "thirty-eight million, nine hundred sixty-seven thousand, five hundred sixty-one".