40520449 has 2 divisors, whose sum is σ = 40520450. Its totient is φ = 40520448.

The previous prime is 40520437. The next prime is 40520477. The reversal of 40520449 is 94402504.

It is an a-pointer prime, because the next prime (40520477) can be obtained adding 40520449 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35820225 + 4700224 = 5985^2 + 2168^2 .

It is a cyclic number.

It is not a de Polignac number, because 40520449 - 2⁷ = 40520321 is a prime.

It is not a weakly prime, because it can be changed into another prime (40520429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20260224 + 20260225.

It is an arithmetic number, because the mean of its divisors is an integer number (20260225).

Almost surely, 2^40520449 is an apocalyptic number.

It is an amenable number.

40520449 is a deficient number, since it is larger than the sum of its proper divisors (1).

40520449 is an equidigital number, since it uses as much as digits as its factorization.

40520449 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 40520449 is about 6365.5674531027. The cubic root of 40520449 is about 343.4720612177.

The spelling of 40520449 in words is "forty million, five hundred twenty thousand, four hundred forty-nine".