840970269 has 12 divisors (see below), whose sum is σ = 1259725376. Its totient is φ = 560646684.

The previous prime is 840970259. The next prime is 840970271. The reversal of 840970269 is 962079048.

It is a happy number.

It is not a de Polignac number, because 840970269 - 2⁵ = 840970237 is a prime.

It is a super-2 number, since 2×840970269² = 1414461986683864722, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (840970259) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1730149 + ... + 1730634.

Almost surely, 2^840970269 is an apocalyptic number.

It is an amenable number.

840970269 is a deficient number, since it is larger than the sum of its proper divisors (418755107).

840970269 is an equidigital number, since it uses as much as digits as its factorization.

840970269 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3460798 (or 3460786 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 840970269 is about 28999.4873920213. The cubic root of 840970269 is about 943.9019445485.

The spelling of 840970269 in words is "eight hundred forty million, nine hundred seventy thousand, two hundred sixty-nine".