43740290290 has 8 divisors (see below), whose sum is σ = 78732522540. Its totient is φ = 17496116112.

The previous prime is 43740290287. The next prime is 43740290299. The reversal of 43740290290 is 9209204734.

It can be written as a sum of positive squares in 2 ways, for example, as 43308523449 + 431766841 = 208107^2 + 20779^2 .

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

It is not an unprimeable number, because it can be changed into a prime (43740290299) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2187014505 + ... + 2187014524.

Almost surely, 2^43740290290 is an apocalyptic number.

43740290290 is a deficient number, since it is larger than the sum of its proper divisors (34992232250).

43740290290 is a wasteful number, since it uses less digits than its factorization.

43740290290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4374029036.

The product of its (nonzero) digits is 108864, while the sum is 40.

The spelling of 43740290290 in words is "forty-three billion, seven hundred forty million, two hundred ninety thousand, two hundred ninety".