39069666 has 12 divisors (see below), whose sum is σ = 84650982. Its totient is φ = 13023216.

The previous prime is 39069661. The next prime is 39069691. The reversal of 39069666 is 66696093.

It can be written as a sum of positive squares in only one way, i.e., 34468641 + 4601025 = 5871^2 + 2145^2 .

It is not an unprimeable number, because it can be changed into a prime (39069661) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1085251 + ... + 1085286.

Almost surely, 2^39069666 is an apocalyptic number.

39069666 is an abundant number, since it is smaller than the sum of its proper divisors (45581316).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

39069666 is a wasteful number, since it uses less digits than its factorization.

39069666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2170545 (or 2170542 counting only the distinct ones).

The product of its (nonzero) digits is 314928, while the sum is 45.

The square root of 39069666 is about 6250.5732537104. The cubic root of 39069666 is about 339.3229490902.

The spelling of 39069666 in words is "thirty-nine million, sixty-nine thousand, six hundred sixty-six".