2729392491 has 8 divisors (see below), whose sum is σ = 4159074304. Its totient is φ = 1559652840.

The previous prime is 2729392481. The next prime is 2729392511. The reversal of 2729392491 is 1942939272.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2729392491 - 2²⁵ = 2695838059 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2729392491.

It is not an unprimeable number, because it can be changed into a prime (2729392411) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64985515 + ... + 64985556.

It is an arithmetic number, because the mean of its divisors is an integer number (519884288).

Almost surely, 2^2729392491 is an apocalyptic number.

2729392491 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2729392491 is a deficient number, since it is larger than the sum of its proper divisors (1429681813).

2729392491 is a wasteful number, since it uses less digits than its factorization.

2729392491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129971081.

The product of its digits is 489888, while the sum is 48.

The square root of 2729392491 is about 52243.5880371936. The cubic root of 2729392491 is about 1397.5113083934.

The spelling of 2729392491 in words is "two billion, seven hundred twenty-nine million, three hundred ninety-two thousand, four hundred ninety-one".