40356983 has 2 divisors, whose sum is σ = 40356984. Its totient is φ = 40356982.

The previous prime is 40356971. The next prime is 40356991. The reversal of 40356983 is 38965304.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40356983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40356583) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20178491 + 20178492.

It is an arithmetic number, because the mean of its divisors is an integer number (20178492).

Almost surely, 2^40356983 is an apocalyptic number.

40356983 is a deficient number, since it is larger than the sum of its proper divisors (1).

40356983 is an equidigital number, since it uses as much as digits as its factorization.

40356983 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 77760, while the sum is 38.

The square root of 40356983 is about 6352.7146166029. The cubic root of 40356983 is about 343.0095649088.

The spelling of 40356983 in words is "forty million, three hundred fifty-six thousand, nine hundred eighty-three".