40391467 has 2 divisors, whose sum is σ = 40391468. Its totient is φ = 40391466.

The previous prime is 40391423. The next prime is 40391489. The reversal of 40391467 is 76419304.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40391467 - 2⁷ = 40391339 is a prime.

It is not a weakly prime, because it can be changed into another prime (40391497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20195733 + 20195734.

It is an arithmetic number, because the mean of its divisors is an integer number (20195734).

Almost surely, 2^40391467 is an apocalyptic number.

40391467 is a deficient number, since it is larger than the sum of its proper divisors (1).

40391467 is an equidigital number, since it uses as much as digits as its factorization.

40391467 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 40391467 is about 6355.4281523749. The cubic root of 40391467 is about 343.1072347010.

The spelling of 40391467 in words is "forty million, three hundred ninety-one thousand, four hundred sixty-seven".