39449040 has 40 divisors (see below), whose sum is σ = 122292768. Its totient is φ = 10519680.

The previous prime is 39449029. The next prime is 39449051. The reversal of 39449040 is 4094493.

It is a happy number.

39449040 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (39449029) and next prime (39449051).

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 39448992 and 39449010.

It is a congruent number.

It is an unprimeable number.

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, 81946 + ... + 82425.

Almost surely, 2^39449040 is an apocalyptic number.

39449040 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

39449040 is an abundant number, since it is smaller than the sum of its proper divisors (82843728).

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

39449040 is a wasteful number, since it uses less digits than its factorization.

39449040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164387 (or 164381 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 33.

The square root of 39449040 is about 6280.8470766291. The cubic root of 39449040 is about 340.4177103677.

The spelling of 39449040 in words is "thirty-nine million, four hundred forty-nine thousand, forty".