39646145 has 48 divisors (see below), whose sum is σ = 61855488. Its totient is φ = 24111360.

The previous prime is 39646133. The next prime is 39646153. The reversal of 39646145 is 54164693.

It is not a de Polignac number, because 39646145 - 2¹⁰ = 39645121 is a prime.

It is a super-2 number, since 2×39646145² = 3143633626722050, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 39646099 and 39646108.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 126509 + ... + 126821.

It is an arithmetic number, because the mean of its divisors is an integer number (1288656).

Almost surely, 2^39646145 is an apocalyptic number.

39646145 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

39646145 is a deficient number, since it is larger than the sum of its proper divisors (22209343).

39646145 is a wasteful number, since it uses less digits than its factorization.

39646145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 390 (or 383 counting only the distinct ones).

The product of its digits is 77760, while the sum is 38.

The square root of 39646145 is about 6296.5184824631. The cubic root of 39646145 is about 340.9837282937.

The spelling of 39646145 in words is "thirty-nine million, six hundred forty-six thousand, one hundred forty-five".