40298761 has 2 divisors, whose sum is σ = 40298762. Its totient is φ = 40298760.

The previous prime is 40298759. The next prime is 40298767. The reversal of 40298761 is 16789204.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38688400 + 1610361 = 6220^2 + 1269^2 .

It is a cyclic number.

It is not a de Polignac number, because 40298761 - 2¹ = 40298759 is a prime.

Together with 40298759, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 40298761.

It is not a weakly prime, because it can be changed into another prime (40298767) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20149380 + 20149381.

It is an arithmetic number, because the mean of its divisors is an integer number (20149381).

Almost surely, 2^40298761 is an apocalyptic number.

It is an amenable number.

40298761 is a deficient number, since it is larger than the sum of its proper divisors (1).

40298761 is an equidigital number, since it uses as much as digits as its factorization.

40298761 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 40298761 is about 6348.1305122059. The cubic root of 40298761 is about 342.8445351101.

The spelling of 40298761 in words is "forty million, two hundred ninety-eight thousand, seven hundred sixty-one".