3949531901 has 8 divisors (see below), whose sum is σ = 4514152704. Its totient is φ = 3385011600.

The previous prime is 3949531889. The next prime is 3949531903. The reversal of 3949531901 is 1091359493.

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 3949531901 - 2¹⁴ = 3949515517 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3949531903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101951 + ... + 135251.

It is an arithmetic number, because the mean of its divisors is an integer number (564269088).

Almost surely, 2^3949531901 is an apocalyptic number.

It is an amenable number.

3949531901 is a deficient number, since it is larger than the sum of its proper divisors (564620803).

3949531901 is a wasteful number, since it uses less digits than its factorization.

3949531901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50251.

The product of its (nonzero) digits is 131220, while the sum is 44.

The square root of 3949531901 is about 62845.3013438555. The cubic root of 3949531901 is about 1580.6966832265.

The spelling of 3949531901 in words is "three billion, nine hundred forty-nine million, five hundred thirty-one thousand, nine hundred one".