40157339 has 2 divisors, whose sum is σ = 40157340. Its totient is φ = 40157338.

The previous prime is 40157291. The next prime is 40157363. The reversal of 40157339 is 93375104.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40157339 is a prime.

It is a super-2 number, since 2×40157339² = 3225223751121842, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (40157389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20078669 + 20078670.

It is an arithmetic number, because the mean of its divisors is an integer number (20078670).

Almost surely, 2^40157339 is an apocalyptic number.

40157339 is a deficient number, since it is larger than the sum of its proper divisors (1).

40157339 is an equidigital number, since it uses as much as digits as its factorization.

40157339 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11340, while the sum is 32.

The square root of 40157339 is about 6336.9818525857. The cubic root of 40157339 is about 342.4430125229.

The spelling of 40157339 in words is "forty million, one hundred fifty-seven thousand, three hundred thirty-nine".