40898391 has 8 divisors (see below), whose sum is σ = 54668784. Its totient is φ = 27196800.

The previous prime is 40898383. The next prime is 40898399. The reversal of 40898391 is 19389804.

40898391 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (40898383) and next prime (40898399).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40898391 - 2³ = 40898383 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40898399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15796 + ... + 18201.

It is an arithmetic number, because the mean of its divisors is an integer number (6833598).

Almost surely, 2^40898391 is an apocalyptic number.

40898391 is a deficient number, since it is larger than the sum of its proper divisors (13770393).

40898391 is a wasteful number, since it uses less digits than its factorization.

40898391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34401.

The product of its (nonzero) digits is 62208, while the sum is 42.

The square root of 40898391 is about 6395.1849855966. The cubic root of 40898391 is about 344.5366348174.

The spelling of 40898391 in words is "forty million, eight hundred ninety-eight thousand, three hundred ninety-one".