39489146 has 4 divisors (see below), whose sum is σ = 59233722. Its totient is φ = 19744572.

The previous prime is 39489139. The next prime is 39489161. The reversal of 39489146 is 64198493.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 64198493 = 109 ⋅588977.

It can be written as a sum of positive squares in only one way, i.e., 31866025 + 7623121 = 5645^2 + 2761^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 39489097 and 39489106.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9872285 + ... + 9872288.

Almost surely, 2^39489146 is an apocalyptic number.

39489146 is a deficient number, since it is larger than the sum of its proper divisors (19744576).

39489146 is a wasteful number, since it uses less digits than its factorization.

39489146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19744575.

The product of its digits is 186624, while the sum is 44.

The square root of 39489146 is about 6284.0389877848. The cubic root of 39489146 is about 340.5330335677.

The spelling of 39489146 in words is "thirty-nine million, four hundred eighty-nine thousand, one hundred forty-six".