3896623491 has 16 divisors (see below), whose sum is σ = 5272750080. Its totient is φ = 2559179840.

The previous prime is 3896623457. The next prime is 3896623561. The reversal of 3896623491 is 1943266983.

It is a cyclic number.

It is not a de Polignac number, because 3896623491 - 2⁹ = 3896622979 is a prime.

It is a super-3 number, since 3×3896623491³ (a number of 30 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (3896623421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 300151 + ... + 312863.

It is an arithmetic number, because the mean of its divisors is an integer number (329546880).

Almost surely, 2^3896623491 is an apocalyptic number.

3896623491 is a deficient number, since it is larger than the sum of its proper divisors (1376126589).

3896623491 is a wasteful number, since it uses less digits than its factorization.

3896623491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14226.

The product of its digits is 1679616, while the sum is 51.

The square root of 3896623491 is about 62422.9404225722. The cubic root of 3896623491 is about 1573.6065264264.

The spelling of 3896623491 in words is "three billion, eight hundred ninety-six million, six hundred twenty-three thousand, four hundred ninety-one".