90722441 has 2 divisors, whose sum is σ = 90722442. Its totient is φ = 90722440.

The previous prime is 90722431. The next prime is 90722447. The reversal of 90722441 is 14422709.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 62473216 + 28249225 = 7904^2 + 5315^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90722441 is a prime.

It is a super-2 number, since 2×90722441² = 16461122601996962, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (90722447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45361220 + 45361221.

It is an arithmetic number, because the mean of its divisors is an integer number (45361221).

Almost surely, 2^90722441 is an apocalyptic number.

It is an amenable number.

90722441 is a deficient number, since it is larger than the sum of its proper divisors (1).

90722441 is an equidigital number, since it uses as much as digits as its factorization.

90722441 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 90722441 is about 9524.8328594259. The cubic root of 90722441 is about 449.3363732537.

The spelling of 90722441 in words is "ninety million, seven hundred twenty-two thousand, four hundred forty-one".