3901355421 has 8 divisors (see below), whose sum is σ = 5209426080. Its totient is φ = 2597094192.

The previous prime is 3901355417. The next prime is 3901355431. The reversal of 3901355421 is 1245531093.

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

It is not a de Polignac number, because 3901355421 - 2² = 3901355417 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3901355431) 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, 949966 + ... + 954063.

It is an arithmetic number, because the mean of its divisors is an integer number (651178260).

Almost surely, 2^3901355421 is an apocalyptic number.

It is an amenable number.

3901355421 is a deficient number, since it is larger than the sum of its proper divisors (1308070659).

3901355421 is a wasteful number, since it uses less digits than its factorization.

3901355421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1904715.

The product of its (nonzero) digits is 16200, while the sum is 33.

The square root of 3901355421 is about 62460.8310943747. The cubic root of 3901355421 is about 1574.2432472388.

The spelling of 3901355421 in words is "three billion, nine hundred one million, three hundred fifty-five thousand, four hundred twenty-one".