2293439440 has 40 divisors (see below), whose sum is σ = 5334736680. Its totient is φ = 916947456.

The previous prime is 2293439437. The next prime is 2293439453. The reversal of 2293439440 is 449343922.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 191767104 + 2101672336 = 13848^2 + 45844^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 2293439393 and 2293439402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 208806 + ... + 219514.

It is an arithmetic number, because the mean of its divisors is an integer number (133368417).

Almost surely, 2^2293439440 is an apocalyptic number.

2293439440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2293439440 is an abundant number, since it is smaller than the sum of its proper divisors (3041297240).

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

2293439440 is a wasteful number, since it uses less digits than its factorization.

2293439440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13399 (or 13393 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 40.

The square root of 2293439440 is about 47889.8678219099. The cubic root of 2293439440 is about 1318.7498571011.

2293439440 divided by its sum of digits (40) gives a triangular number (57335986 = T₁₀₇₀₈).

The spelling of 2293439440 in words is "two billion, two hundred ninety-three million, four hundred thirty-nine thousand, four hundred forty".