3850406621 has 2 divisors, whose sum is σ = 3850406622. Its totient is φ = 3850406620.

The previous prime is 3850406543. The next prime is 3850406629. The reversal of 3850406621 is 1266040583.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3146088100 + 704318521 = 56090^2 + 26539^2 .

It is a cyclic number.

It is not a de Polignac number, because 3850406621 - 2²⁶ = 3783297757 is a prime.

It is a super-2 number, since 2×3850406621² = 29651262294081275282, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3850406629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1925203310 + 1925203311.

It is an arithmetic number, because the mean of its divisors is an integer number (1925203311).

Almost surely, 2^3850406621 is an apocalyptic number.

It is an amenable number.

3850406621 is a deficient number, since it is larger than the sum of its proper divisors (1).

3850406621 is an equidigital number, since it uses as much as digits as its factorization.

3850406621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34560, while the sum is 35.

The square root of 3850406621 is about 62051.6447888370. The cubic root of 3850406621 is about 1567.3603827191.

The spelling of 3850406621 in words is "three billion, eight hundred fifty million, four hundred six thousand, six hundred twenty-one".