40474991 has 2 divisors, whose sum is σ = 40474992. Its totient is φ = 40474990.

The previous prime is 40474979. The next prime is 40474999. The reversal of 40474991 is 19947404.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40474991 - 2²² = 36280687 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40474999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20237495 + 20237496.

It is an arithmetic number, because the mean of its divisors is an integer number (20237496).

Almost surely, 2^40474991 is an apocalyptic number.

40474991 is a deficient number, since it is larger than the sum of its proper divisors (1).

40474991 is an equidigital number, since it uses as much as digits as its factorization.

40474991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 40474991 is about 6361.9958346418. The cubic root of 40474991 is about 343.3435714001.

The spelling of 40474991 in words is "forty million, four hundred seventy-four thousand, nine hundred ninety-one".