3948362897 has 8 divisors (see below), whose sum is σ = 4184180712. Its totient is φ = 3712940800.

The previous prime is 3948362881. The next prime is 3948362909. The reversal of 3948362897 is 7982638493.

It is a Cunningham number, because it is equal to 62836²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 1987733056 + 1960629841 = 44584^2 + 44279^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 3948362897 - 2⁴ = 3948362881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3948362807) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78254 + ... + 118407.

It is an arithmetic number, because the mean of its divisors is an integer number (523022589).

Almost surely, 2^3948362897 is an apocalyptic number.

It is an amenable number.

3948362897 is a deficient number, since it is larger than the sum of its proper divisors (235817815).

3948362897 is a wasteful number, since it uses less digits than its factorization.

3948362897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197859.

The product of its digits is 15676416, while the sum is 59.

The square root of 3948362897 is about 62836.0000079572. Note that the first 5 decimals coincide. The cubic root of 3948362897 is about 1580.5407134278.

The spelling of 3948362897 in words is "three billion, nine hundred forty-eight million, three hundred sixty-two thousand, eight hundred ninety-seven".