40829479 has 2 divisors, whose sum is σ = 40829480. Its totient is φ = 40829478.

The previous prime is 40829471. The next prime is 40829501. The reversal of 40829479 is 97492804.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40829479 - 2³ = 40829471 is a prime.

It is a super-2 number, since 2×40829479² = 3334092710822882, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40829471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20414739 + 20414740.

It is an arithmetic number, because the mean of its divisors is an integer number (20414740).

Almost surely, 2^40829479 is an apocalyptic number.

40829479 is a deficient number, since it is larger than the sum of its proper divisors (1).

40829479 is an equidigital number, since it uses as much as digits as its factorization.

40829479 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 40829479 is about 6389.7949106368. The cubic root of 40829479 is about 344.3430163104.

The spelling of 40829479 in words is "forty million, eight hundred twenty-nine thousand, four hundred seventy-nine".