40898261 has 2 divisors, whose sum is σ = 40898262. Its totient is φ = 40898260.

The previous prime is 40898251. The next prime is 40898287. The reversal of 40898261 is 16289804.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24850225 + 16048036 = 4985^2 + 4006^2 .

It is a cyclic number.

It is not a de Polignac number, because 40898261 - 2¹⁴ = 40881877 is a prime.

It is equal to p_2484983 and since 40898261 and 2484983 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40898251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20449130 + 20449131.

It is an arithmetic number, because the mean of its divisors is an integer number (20449131).

Almost surely, 2^40898261 is an apocalyptic number.

It is an amenable number.

40898261 is a deficient number, since it is larger than the sum of its proper divisors (1).

40898261 is an equidigital number, since it uses as much as digits as its factorization.

40898261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27648, while the sum is 38.

The square root of 40898261 is about 6395.1748216917. The cubic root of 40898261 is about 344.5362697680.

The spelling of 40898261 in words is "forty million, eight hundred ninety-eight thousand, two hundred sixty-one".