3479702121 has 45 divisors (see below), whose sum is σ = 5959285761. Its totient is φ = 1950884208.

The previous prime is 3479702101. The next prime is 3479702143. The reversal of 3479702121 is 1212079743.

The square root of 3479702121 is 58989.

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

It can be written as a sum of positive squares in 2 ways, for example, as 679175721 + 2800526400 = 26061^2 + 52920^2 .

It is a de Polignac number, because none of the positive numbers 2^k-3479702121 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3479702101) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 65654731 + ... + 65654783.

Almost surely, 2^3479702121 is an apocalyptic number.

3479702121 is the 58989-th square number.

3479702121 is the 29495-th centered octagonal number.

It is an amenable number.

3479702121 is a deficient number, since it is larger than the sum of its proper divisors (2479583640).

3479702121 is an frugal number, since it uses more digits than its factorization.

3479702121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232 (or 63 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 36.

The cubic root of 3479702121 is about 1515.3537310808.

Multiplying 3479702121 by its sum of digits (36), we get a square (125269276356 = 353934²).

It can be divided in two parts, 3479 and 702121, that added together give a square (705600 = 840²).

The spelling of 3479702121 in words is "three billion, four hundred seventy-nine million, seven hundred two thousand, one hundred twenty-one".