3912877809 has 27 divisors (see below), whose sum is σ = 5861701963. Its totient is φ = 2515131024.

The previous prime is 3912877807. The next prime is 3912877819. The reversal of 3912877809 is 9087782193.

The square root of 3912877809 is 62553.

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., 2051818209 + 1861059600 = 45297^2 + 43140^2 .

It is not a de Polignac number, because 3912877809 - 2¹ = 3912877807 is a prime.

It is a super-2 number, since 2×3912877809² = 30621225496329280962, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3912877807) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 5441752 + ... + 5442470.

Almost surely, 2^3912877809 is an apocalyptic number.

3912877809 is the 62553-rd square number.

3912877809 is the 31277-th centered octagonal number.

It is an amenable number.

3912877809 is a deficient number, since it is larger than the sum of its proper divisors (1948824154).

3912877809 is an frugal number, since it uses more digits than its factorization.

3912877809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1502 (or 751 counting only the distinct ones).

The product of its (nonzero) digits is 1524096, while the sum is 54.

The cubic root of 3912877809 is about 1575.7915307893.

It can be divided in two parts, 3912 and 877809, that added together give a square (881721 = 939²).

The spelling of 3912877809 in words is "three billion, nine hundred twelve million, eight hundred seventy-seven thousand, eight hundred nine".