40998517 has 4 divisors (see below), whose sum is σ = 46855456. Its totient is φ = 35141580.

The previous prime is 40998511. The next prime is 40998563. The reversal of 40998517 is 71589904.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 40998517 - 2⁷ = 40998389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40998511) 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, 2928459 + ... + 2928472.

It is an arithmetic number, because the mean of its divisors is an integer number (11713864).

Almost surely, 2^40998517 is an apocalyptic number.

It is an amenable number.

40998517 is a deficient number, since it is larger than the sum of its proper divisors (5856939).

40998517 is an equidigital number, since it uses as much as digits as its factorization.

40998517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5856938.

The product of its (nonzero) digits is 90720, while the sum is 43.

The square root of 40998517 is about 6403.0084335412. The cubic root of 40998517 is about 344.8175665035.

The spelling of 40998517 in words is "forty million, nine hundred ninety-eight thousand, five hundred seventeen".