40990471 has 4 divisors (see below), whose sum is σ = 41014512. Its totient is φ = 40966432.

The previous prime is 40990457. The next prime is 40990483. The reversal of 40990471 is 17409904.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40990471 - 2¹⁹ = 40466183 is a prime.

It is a super-3 number, since 3×40990471³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40990421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9250 + ... + 12943.

It is an arithmetic number, because the mean of its divisors is an integer number (10253628).

Almost surely, 2^40990471 is an apocalyptic number.

40990471 is a deficient number, since it is larger than the sum of its proper divisors (24041).

40990471 is a wasteful number, since it uses less digits than its factorization.

40990471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24040.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 40990471 is about 6402.3801043050. The cubic root of 40990471 is about 344.7950080968.

The spelling of 40990471 in words is "forty million, nine hundred ninety thousand, four hundred seventy-one".