3948421931 has 8 divisors (see below), whose sum is σ = 4058527680. Its totient is φ = 3839635072.

The previous prime is 3948421909. The next prime is 3948421933. The reversal of 3948421931 is 1391248493.

3948421931 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 3948421931 - 2¹⁰ = 3948420907 is a prime.

It is a super-2 number, since 2×3948421931² = 31180071490403537522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3948421933) 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, 323651 + ... + 335628.

It is an arithmetic number, because the mean of its divisors is an integer number (507315960).

Almost surely, 2^3948421931 is an apocalyptic number.

3948421931 is a deficient number, since it is larger than the sum of its proper divisors (110105749).

3948421931 is a wasteful number, since it uses less digits than its factorization.

3948421931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 659445.

The product of its digits is 186624, while the sum is 44.

The square root of 3948421931 is about 62836.4697528434. The cubic root of 3948421931 is about 1580.5485905470.

The spelling of 3948421931 in words is "three billion, nine hundred forty-eight million, four hundred twenty-one thousand, nine hundred thirty-one".