29219799844 has 9 divisors (see below), whose sum is σ = 51135248017. Its totient is φ = 14609728984.

The previous prime is 29219799839. The next prime is 29219799853. The reversal of 29219799844 is 44899791292.

It is a happy number.

The square root of 29219799844 is 170938.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 27377673444 + 1842126400 = 165462^2 + 42920^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 299142 + ... + 384610.

Almost surely, 2^29219799844 is an apocalyptic number.

29219799844 is the 170938-th square number.

It is an amenable number.

29219799844 is a deficient number, since it is larger than the sum of its proper divisors (21915448173).

29219799844 is an frugal number, since it uses more digits than its factorization.

29219799844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170942 (or 85471 counting only the distinct ones).

The product of its digits is 23514624, while the sum is 64.

Multiplying 29219799844 by its sum of digits (64), we get a square (1870067190016 = 1367504²).

The spelling of 29219799844 in words is "twenty-nine billion, two hundred nineteen million, seven hundred ninety-nine thousand, eight hundred forty-four".