38493946 has 4 divisors (see below), whose sum is σ = 57740922. Its totient is φ = 19246972.

The previous prime is 38493937. The next prime is 38493947. The reversal of 38493946 is 64939483.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 64939483 = 7 ⋅9277069.

It can be written as a sum of positive squares in only one way, i.e., 21724921 + 16769025 = 4661^2 + 4095^2 .

It is a junction number, because it is equal to n+sod(n) for n = 38493896 and 38493905.

It is not an unprimeable number, because it can be changed into a prime (38493947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9623485 + ... + 9623488.

Almost surely, 2^38493946 is an apocalyptic number.

38493946 is a deficient number, since it is larger than the sum of its proper divisors (19246976).

38493946 is a wasteful number, since it uses less digits than its factorization.

38493946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19246975.

The product of its digits is 559872, while the sum is 46.

The square root of 38493946 is about 6204.3489585935. The cubic root of 38493946 is about 337.6479709634.

The spelling of 38493946 in words is "thirty-eight million, four hundred ninety-three thousand, nine hundred forty-six".