2172969396 has 96 divisors (see below), whose sum is σ = 6208245120. Its totient is φ = 653038848.

The previous prime is 2172969361. The next prime is 2172969401. The reversal of 2172969396 is 6939692712.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 42376 + ... + 78368.

It is an arithmetic number, because the mean of its divisors is an integer number (64669220).

Almost surely, 2^2172969396 is an apocalyptic number.

2172969396 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2172969396, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3104122560).

2172969396 is an abundant number, since it is smaller than the sum of its proper divisors (4035275724).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2172969396 is a wasteful number, since it uses less digits than its factorization.

2172969396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36062 (or 36054 counting only the distinct ones).

The product of its digits is 2204496, while the sum is 54.

The square root of 2172969396 is about 46615.1198217917. The cubic root of 2172969396 is about 1295.2428490661.

It can be divided in two parts, 21729 and 69396, that added together give a cube (91125 = 45³).

The spelling of 2172969396 in words is "two billion, one hundred seventy-two million, nine hundred sixty-nine thousand, three hundred ninety-six".