39670049 has 4 divisors (see below), whose sum is σ = 40949760. Its totient is φ = 38390340.

The previous prime is 39670013. The next prime is 39670051. The reversal of 39670049 is 94007693.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 39670049 - 2²⁴ = 22892833 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 39669994 and 39670021.

It is not an unprimeable number, because it can be changed into a prime (39670079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 639809 + ... + 639870.

It is an arithmetic number, because the mean of its divisors is an integer number (10237440).

Almost surely, 2^39670049 is an apocalyptic number.

It is an amenable number.

39670049 is a deficient number, since it is larger than the sum of its proper divisors (1279711).

39670049 is a wasteful number, since it uses less digits than its factorization.

39670049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1279710.

The product of its (nonzero) digits is 40824, while the sum is 38.

The square root of 39670049 is about 6298.4163882678. The cubic root of 39670049 is about 341.0522447278.

The spelling of 39670049 in words is "thirty-nine million, six hundred seventy thousand, forty-nine".