39453949 has 8 divisors (see below), whose sum is σ = 41508000. Its totient is φ = 37446192.

The previous prime is 39453929. The next prime is 39453971. The reversal of 39453949 is 94935493.

39453949 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 39453949 - 2⁹ = 39453437 is a prime.

It is a super-2 number, since 2×39453949² = 3113228183389202, 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 = 39453899 and 39453908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39453929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9819 + ... + 13240.

It is an arithmetic number, because the mean of its divisors is an integer number (5188500).

Almost surely, 2^39453949 is an apocalyptic number.

It is an amenable number.

39453949 is a deficient number, since it is larger than the sum of its proper divisors (2054051).

39453949 is a wasteful number, since it uses less digits than its factorization.

39453949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23147.

The product of its digits is 524880, while the sum is 46.

The square root of 39453949 is about 6281.2378557097. The cubic root of 39453949 is about 340.4318301978.

The spelling of 39453949 in words is "thirty-nine million, four hundred fifty-three thousand, nine hundred forty-nine".