90861941 has 2 divisors, whose sum is σ = 90861942. Its totient is φ = 90861940.

The previous prime is 90861931. The next prime is 90861943. The reversal of 90861941 is 14916809.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 59613841 + 31248100 = 7721^2 + 5590^2 .

It is a cyclic number.

It is not a de Polignac number, because 90861941 - 2⁶ = 90861877 is a prime.

Together with 90861943, it forms a pair of twin primes.

It is a Chen prime.

It is a pancake number, because a pancake can be divided into 90861941 parts by 13480 straight cuts.

It is a junction number, because it is equal to n+sod(n) for n = 90861895 and 90861904.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90861943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45430970 + 45430971.

It is an arithmetic number, because the mean of its divisors is an integer number (45430971).

Almost surely, 2^90861941 is an apocalyptic number.

It is an amenable number.

90861941 is a deficient number, since it is larger than the sum of its proper divisors (1).

90861941 is an equidigital number, since it uses as much as digits as its factorization.

90861941 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 38.

The square root of 90861941 is about 9532.1530096825. The cubic root of 90861941 is about 449.5665637218.

The spelling of 90861941 in words is "ninety million, eight hundred sixty-one thousand, nine hundred forty-one".