38259945 has 40 divisors (see below), whose sum is σ = 72631944. Its totient is φ = 19201536.

The previous prime is 38259941. The next prime is 38259953. The reversal of 38259945 is 54995283.

It can be written as a sum of positive squares in 4 ways, for example, as 17438976 + 20820969 = 4176^2 + 4563^2 .

It is not a de Polignac number, because 38259945 - 2² = 38259941 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 38259945.

It is not an unprimeable number, because it can be changed into a prime (38259941) 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, 4107 + ... + 9663.

Almost surely, 2^38259945 is an apocalyptic number.

It is an amenable number.

38259945 is a deficient number, since it is larger than the sum of its proper divisors (34371999).

38259945 is a wasteful number, since it uses less digits than its factorization.

38259945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5591 (or 5582 counting only the distinct ones).

The product of its digits is 388800, while the sum is 45.

The square root of 38259945 is about 6185.4623917699. The cubic root of 38259945 is about 336.9624033877.

It can be divided in two parts, 38259 and 945, that added together give a square (39204 = 198²).

The spelling of 38259945 in words is "thirty-eight million, two hundred fifty-nine thousand, nine hundred forty-five".