40293157 has 2 divisors, whose sum is σ = 40293158. Its totient is φ = 40293156.

The previous prime is 40293137. The next prime is 40293191. The reversal of 40293157 is 75139204.

40293157 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36168196 + 4124961 = 6014^2 + 2031^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40293157 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40293137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20146578 + 20146579.

It is an arithmetic number, because the mean of its divisors is an integer number (20146579).

Almost surely, 2^40293157 is an apocalyptic number.

It is an amenable number.

40293157 is a deficient number, since it is larger than the sum of its proper divisors (1).

40293157 is an equidigital number, since it uses as much as digits as its factorization.

40293157 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 40293157 is about 6347.6891070688. The cubic root of 40293157 is about 342.8286422324.

The spelling of 40293157 in words is "forty million, two hundred ninety-three thousand, one hundred fifty-seven".