3961249330 has 16 divisors (see below), whose sum is σ = 7137747864. Its totient is φ = 1582833280.

The previous prime is 3961249319. The next prime is 3961249337. The reversal of 3961249330 is 339421693.

It can be written as a sum of positive squares in 4 ways, for example, as 1842212241 + 2119037089 = 42921^2 + 46033^2 .

It is not an unprimeable number, because it can be changed into a prime (3961249337) 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, 198301 + ... + 217360.

Almost surely, 2^3961249330 is an apocalyptic number.

3961249330 is a deficient number, since it is larger than the sum of its proper divisors (3176498534).

3961249330 is a wasteful number, since it uses less digits than its factorization.

3961249330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 416621.

The product of its (nonzero) digits is 104976, while the sum is 40.

The square root of 3961249330 is about 62938.4566858769. The cubic root of 3961249330 is about 1582.2583378806.

The spelling of 3961249330 in words is "three billion, nine hundred sixty-one million, two hundred forty-nine thousand, three hundred thirty".