2021906469 has 16 divisors (see below), whose sum is σ = 2944419840. Its totient is φ = 1223954160.

The previous prime is 2021906449. The next prime is 2021906507. The reversal of 2021906469 is 9646091202.

It is not a de Polignac number, because 2021906469 - 2⁸ = 2021906213 is a prime.

It is a super-2 number, since 2×2021906469² = 8176211538768095922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021906429) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7317 + ... + 64010.

It is an arithmetic number, because the mean of its divisors is an integer number (184026240).

Almost surely, 2^2021906469 is an apocalyptic number.

It is an amenable number.

2021906469 is a deficient number, since it is larger than the sum of its proper divisors (922513371).

2021906469 is a wasteful number, since it uses less digits than its factorization.

2021906469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72200.

The product of its (nonzero) digits is 46656, while the sum is 39.

The square root of 2021906469 is about 44965.6142958150. The cubic root of 2021906469 is about 1264.5044263766.

The spelling of 2021906469 in words is "two billion, twenty-one million, nine hundred six thousand, four hundred sixty-nine".