40630549 has 4 divisors (see below), whose sum is σ = 41621580. Its totient is φ = 39639520.

The previous prime is 40630519. The next prime is 40630573. The reversal of 40630549 is 94503604.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4028049 + 36602500 = 2007^2 + 6050^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40630549 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40630549.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40630519) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 495454 + ... + 495535.

It is an arithmetic number, because the mean of its divisors is an integer number (10405395).

Almost surely, 2^40630549 is an apocalyptic number.

It is an amenable number.

40630549 is a deficient number, since it is larger than the sum of its proper divisors (991031).

40630549 is an equidigital number, since it uses as much as digits as its factorization.

40630549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 991030.

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 40630549 is about 6374.2096765011. The cubic root of 40630549 is about 343.7828678655.

The spelling of 40630549 in words is "forty million, six hundred thirty thousand, five hundred forty-nine".