40280629 has 2 divisors, whose sum is σ = 40280630. Its totient is φ = 40280628.

The previous prime is 40280621. The next prime is 40280641. The reversal of 40280629 is 92608204.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36663025 + 3617604 = 6055^2 + 1902^2 .

It is a cyclic number.

It is not a de Polignac number, because 40280629 - 2³ = 40280621 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40280629.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40280621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20140314 + 20140315.

It is an arithmetic number, because the mean of its divisors is an integer number (20140315).

Almost surely, 2^40280629 is an apocalyptic number.

It is an amenable number.

40280629 is a deficient number, since it is larger than the sum of its proper divisors (1).

40280629 is an equidigital number, since it uses as much as digits as its factorization.

40280629 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 40280629 is about 6346.7022145363. The cubic root of 40280629 is about 342.7931076424.

The spelling of 40280629 in words is "forty million, two hundred eighty thousand, six hundred twenty-nine".