49440864 has 48 divisors (see below), whose sum is σ = 141583680. Its totient is φ = 14981760.

The previous prime is 49440863. The next prime is 49440883. The reversal of 49440864 is 46804494.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49440863) 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 7 ways as a sum of consecutive naturals, for example, 22354 + ... + 24465.

It is an arithmetic number, because the mean of its divisors is an integer number (2949660).

Almost surely, 2^49440864 is an apocalyptic number.

49440864 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

49440864 is an abundant number, since it is smaller than the sum of its proper divisors (92142816).

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

49440864 is a wasteful number, since it uses less digits than its factorization.

49440864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46843 (or 46835 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 39.

The square root of 49440864 is about 7031.4197712837. The cubic root of 49440864 is about 367.0247491767.

The spelling of 49440864 in words is "forty-nine million, four hundred forty thousand, eight hundred sixty-four".