40171379 has 2 divisors, whose sum is σ = 40171380. Its totient is φ = 40171378.

The previous prime is 40171333. The next prime is 40171393. The reversal of 40171379 is 97317104.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40171379 is a prime.

It is a super-2 number, since 2×40171379² = 3227479381523282, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (40171279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20085689 + 20085690.

It is an arithmetic number, because the mean of its divisors is an integer number (20085690).

Almost surely, 2^40171379 is an apocalyptic number.

40171379 is a deficient number, since it is larger than the sum of its proper divisors (1).

40171379 is an equidigital number, since it uses as much as digits as its factorization.

40171379 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5292, while the sum is 32.

The square root of 40171379 is about 6338.0895386544. The cubic root of 40171379 is about 342.4829167248.

The spelling of 40171379 in words is "forty million, one hundred seventy-one thousand, three hundred seventy-nine".