38993450 has 12 divisors (see below), whose sum is σ = 72527910. Its totient is φ = 15597360.

The previous prime is 38993447. The next prime is 38993459. The reversal of 38993450 is 5439983.

It can be written as a sum of positive squares in 3 ways, for example, as 21911761 + 17081689 = 4681^2 + 4133^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 38993398 and 38993407.

It is not an unprimeable number, because it can be changed into a prime (38993459) 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, 389885 + ... + 389984.

Almost surely, 2^38993450 is an apocalyptic number.

38993450 is a deficient number, since it is larger than the sum of its proper divisors (33534460).

38993450 is a wasteful number, since it uses less digits than its factorization.

38993450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 779881 (or 779876 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 41.

The square root of 38993450 is about 6244.4735566739. The cubic root of 38993450 is about 339.1021582513.

It can be divided in two parts, 389 and 93450, that added together give a palindrome (93839).

The spelling of 38993450 in words is "thirty-eight million, nine hundred ninety-three thousand, four hundred fifty".