40156783 has 2 divisors, whose sum is σ = 40156784. Its totient is φ = 40156782.

The previous prime is 40156777. The next prime is 40156801. The reversal of 40156783 is 38765104.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40156783 - 2⁵ = 40156751 is a prime.

It is a super-2 number, since 2×40156783² = 3225134441818178, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40156723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20078391 + 20078392.

It is an arithmetic number, because the mean of its divisors is an integer number (20078392).

Almost surely, 2^40156783 is an apocalyptic number.

40156783 is a deficient number, since it is larger than the sum of its proper divisors (1).

40156783 is an equidigital number, since it uses as much as digits as its factorization.

40156783 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 40156783 is about 6336.9379829694. The cubic root of 40156783 is about 342.4414320796.

The spelling of 40156783 in words is "forty million, one hundred fifty-six thousand, seven hundred eighty-three".