3921479501 has 2 divisors, whose sum is σ = 3921479502. Its totient is φ = 3921479500.

The previous prime is 3921479491. The next prime is 3921479531. The reversal of 3921479501 is 1059741293.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3085691401 + 835788100 = 55549^2 + 28910^2 .

It is a cyclic number.

It is not a de Polignac number, because 3921479501 - 2¹⁸ = 3921217357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3921479531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1960739750 + 1960739751.

It is an arithmetic number, because the mean of its divisors is an integer number (1960739751).

Almost surely, 2^3921479501 is an apocalyptic number.

It is an amenable number.

3921479501 is a deficient number, since it is larger than the sum of its proper divisors (1).

3921479501 is an equidigital number, since it uses as much as digits as its factorization.

3921479501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 68040, while the sum is 41.

The square root of 3921479501 is about 62621.7174868272. The cubic root of 3921479501 is about 1576.9453749160.

The spelling of 3921479501 in words is "three billion, nine hundred twenty-one million, four hundred seventy-nine thousand, five hundred one".