40870449 has 9 divisors (see below), whose sum is σ = 59062809. Its totient is φ = 27234180.

The previous prime is 40870447. The next prime is 40870507. The reversal of 40870449 is 94407804.

The square root of 40870449 is 6393.

It is a perfect power (a square), and thus also a powerful number.

40870449 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 40870449 - 2¹ = 40870447 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40870441) 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 8 ways as a sum of consecutive naturals, for example, 18114 + ... + 20244.

Almost surely, 2^40870449 is an apocalyptic number.

40870449 is the 6393-rd square number.

40870449 is the 3197-th centered octagonal number.

It is an amenable number.

40870449 is a deficient number, since it is larger than the sum of its proper divisors (18192360).

40870449 is an frugal number, since it uses more digits than its factorization.

40870449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4268 (or 2134 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The cubic root of 40870449 is about 344.4581538498.

Multiplying 40870449 by its sum of digits (36), we get a square (1471336164 = 38358²).

It can be divided in two parts, 40 and 870449, that added together give a square (870489 = 933²).

The spelling of 40870449 in words is "forty million, eight hundred seventy thousand, four hundred forty-nine".