39145486 has 4 divisors (see below), whose sum is σ = 58718232. Its totient is φ = 19572742.

The previous prime is 39145481. The next prime is 39145499. The reversal of 39145486 is 68454193.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 68454193 = 2141 ⋅31973.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39145481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9786370 + ... + 9786373.

It is an arithmetic number, because the mean of its divisors is an integer number (14679558).

Almost surely, 2^39145486 is an apocalyptic number.

39145486 is a deficient number, since it is larger than the sum of its proper divisors (19572746).

39145486 is a wasteful number, since it uses less digits than its factorization.

39145486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19572745.

The product of its digits is 103680, while the sum is 40.

The square root of 39145486 is about 6256.6353577622. The cubic root of 39145486 is about 339.5423080285.

The spelling of 39145486 in words is "thirty-nine million, one hundred forty-five thousand, four hundred eighty-six".