53440849 has 16 divisors (see below), whose sum is σ = 66816000. Its totient is φ = 41524560.

The previous prime is 53440789. The next prime is 53440859. The reversal of 53440849 is 94804435.

53440849 = T₂₃₀ + T₂₃₁ + ... + T₆₉₂.

It is not a de Polignac number, because 53440849 - 2⁹ = 53440337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53440859) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34902 + ... + 36400.

It is an arithmetic number, because the mean of its divisors is an integer number (4176000).

Almost surely, 2^53440849 is an apocalyptic number.

It is an amenable number.

53440849 is a deficient number, since it is larger than the sum of its proper divisors (13375151).

53440849 is a wasteful number, since it uses less digits than its factorization.

53440849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1980.

The product of its (nonzero) digits is 69120, while the sum is 37.

The square root of 53440849 is about 7310.3248217846. The cubic root of 53440849 is about 376.6671820635.

It can be divided in two parts, 53440 and 849, that added together give a square (54289 = 233²).

The spelling of 53440849 in words is "fifty-three million, four hundred forty thousand, eight hundred forty-nine".