38449646 has 4 divisors (see below), whose sum is σ = 57674472. Its totient is φ = 19224822.

The previous prime is 38449643. The next prime is 38449657. The reversal of 38449646 is 64694483.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 64694483 = 7 ⋅9242069.

It is a junction number, because it is equal to n+sod(n) for n = 38449597 and 38449606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38449643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9612410 + ... + 9612413.

It is an arithmetic number, because the mean of its divisors is an integer number (14418618).

Almost surely, 2^38449646 is an apocalyptic number.

38449646 is a deficient number, since it is larger than the sum of its proper divisors (19224826).

38449646 is a wasteful number, since it uses less digits than its factorization.

38449646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19224825.

The product of its digits is 497664, while the sum is 44.

The square root of 38449646 is about 6200.7778544308. Note that the first 3 decimals coincide. The cubic root of 38449646 is about 337.5183960709.

The spelling of 38449646 in words is "thirty-eight million, four hundred forty-nine thousand, six hundred forty-six".