39980329 has 3 divisors (see below), whose sum is σ = 39986653. Its totient is φ = 39974006.

The previous prime is 39980327. The next prime is 39980341. The reversal of 39980329 is 92308993.

It is a happy number.

The square root of 39980329 is 6323.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 39980329 - 2¹ = 39980327 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39980321) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 3162 + ... + 9484.

Almost surely, 2^39980329 is an apocalyptic number.

39980329 is the 6323-rd square number.

39980329 is the 3162-nd centered octagonal number.

It is an amenable number.

39980329 is a deficient number, since it is larger than the sum of its proper divisors (6324).

39980329 is an frugal number, since it uses more digits than its factorization.

39980329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12646 (or 6323 counting only the distinct ones).

The product of its (nonzero) digits is 104976, while the sum is 43.

The cubic root of 39980329 is about 341.9391185815.

Multiplying 39980329 by its product of nonzero digits (104976), we get a square (4196975017104 = 2048652²).

The spelling of 39980329 in words is "thirty-nine million, nine hundred eighty thousand, three hundred twenty-nine".