40358957 has 2 divisors, whose sum is σ = 40358958. Its totient is φ = 40358956.

The previous prime is 40358863. The next prime is 40358959. The reversal of 40358957 is 75985304.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31292836 + 9066121 = 5594^2 + 3011^2 .

It is a cyclic number.

It is not a de Polignac number, because 40358957 - 2¹² = 40354861 is a prime.

Together with 40358959, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40358959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20179478 + 20179479.

It is an arithmetic number, because the mean of its divisors is an integer number (20179479).

Almost surely, 2^40358957 is an apocalyptic number.

It is an amenable number.

40358957 is a deficient number, since it is larger than the sum of its proper divisors (1).

40358957 is an equidigital number, since it uses as much as digits as its factorization.

40358957 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 151200, while the sum is 41.

The square root of 40358957 is about 6352.8699813549. The cubic root of 40358957 is about 343.0151574134.

The spelling of 40358957 in words is "forty million, three hundred fifty-eight thousand, nine hundred fifty-seven".