40471815 has 32 divisors (see below), whose sum is σ = 70177536. Its totient is φ = 19837440.

The previous prime is 40471813. The next prime is 40471831. The reversal of 40471815 is 51817404.

It is not a de Polignac number, because 40471815 - 2¹ = 40471813 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40471813) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9120 + ... + 12810.

It is an arithmetic number, because the mean of its divisors is an integer number (2193048).

Almost surely, 2^40471815 is an apocalyptic number.

40471815 is a deficient number, since it is larger than the sum of its proper divisors (29705721).

40471815 is a wasteful number, since it uses less digits than its factorization.

40471815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3759.

The product of its (nonzero) digits is 4480, while the sum is 30.

The square root of 40471815 is about 6361.7462225398. The cubic root of 40471815 is about 343.3345906469.

The spelling of 40471815 in words is "forty million, four hundred seventy-one thousand, eight hundred fifteen".