3109400644 has 45 divisors (see below), whose sum is σ = 6359157917. Its totient is φ = 1330258272.

The previous prime is 3109400639. The next prime is 3109400653. The reversal of 3109400644 is 4460049013.

The square root of 3109400644 is 55762.

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., 512479044 + 2596921600 = 22638^2 + 50960^2 .

It is a super-2 number, since 2×3109400644² = 19336744729815229472, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 5464392 + ... + 5464960.

Almost surely, 2^3109400644 is an apocalyptic number.

3109400644 is the 55762-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3109400644

3109400644 is an abundant number, since it is smaller than the sum of its proper divisors (3249757273).

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

3109400644 is an frugal number, since it uses more digits than its factorization.

3109400644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1170 (or 578 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 31.

The cubic root of 3109400644 is about 1459.5721276992.

Adding to 3109400644 its reverse (4460049013), we get a palindrome (7569449657).

The spelling of 3109400644 in words is "three billion, one hundred nine million, four hundred thousand, six hundred forty-four".