40373951 has 2 divisors, whose sum is σ = 40373952. Its totient is φ = 40373950.

The previous prime is 40373923. The next prime is 40374029. The reversal of 40373951 is 15937304.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40373951 is a prime.

It is a Sophie Germain 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 (40373251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20186975 + 20186976.

It is an arithmetic number, because the mean of its divisors is an integer number (20186976).

Almost surely, 2^40373951 is an apocalyptic number.

40373951 is a deficient number, since it is larger than the sum of its proper divisors (1).

40373951 is an equidigital number, since it uses as much as digits as its factorization.

40373951 is an evil number, because the sum of its binary digits is even.

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

The square root of 40373951 is about 6354.0499683273. The cubic root of 40373951 is about 343.0576306986.

The spelling of 40373951 in words is "forty million, three hundred seventy-three thousand, nine hundred fifty-one".