40501649 has 2 divisors, whose sum is σ = 40501650. Its totient is φ = 40501648.

The previous prime is 40501631. The next prime is 40501679. The reversal of 40501649 is 94610504.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35188624 + 5313025 = 5932^2 + 2305^2 .

It is a cyclic number.

It is not a de Polignac number, because 40501649 - 2⁸ = 40501393 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (40501609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20250824 + 20250825.

It is an arithmetic number, because the mean of its divisors is an integer number (20250825).

Almost surely, 2^40501649 is an apocalyptic number.

It is an amenable number.

40501649 is a deficient number, since it is larger than the sum of its proper divisors (1).

40501649 is an equidigital number, since it uses as much as digits as its factorization.

40501649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 40501649 is about 6364.0905870360. The cubic root of 40501649 is about 343.4189335269.

The spelling of 40501649 in words is "forty million, five hundred one thousand, six hundred forty-nine".