416269621 has 2 divisors, whose sum is σ = 416269622. Its totient is φ = 416269620.

The previous prime is 416269619. The next prime is 416269639. The reversal of 416269621 is 126962614.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 415588996 + 680625 = 20386^2 + 825^2 .

It is a cyclic number.

It is not a de Polignac number, because 416269621 - 2¹ = 416269619 is a prime.

Together with 416269619, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (416269121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 208134810 + 208134811.

It is an arithmetic number, because the mean of its divisors is an integer number (208134811).

Almost surely, 2^416269621 is an apocalyptic number.

It is an amenable number.

416269621 is a deficient number, since it is larger than the sum of its proper divisors (1).

416269621 is an equidigital number, since it uses as much as digits as its factorization.

416269621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31104, while the sum is 37.

The square root of 416269621 is about 20402.6866123067. The cubic root of 416269621 is about 746.6634727179.

The spelling of 416269621 in words is "four hundred sixteen million, two hundred sixty-nine thousand, six hundred twenty-one".