3980749491 has 24 divisors (see below), whose sum is σ = 5907283200. Its totient is φ = 2581603200.

The previous prime is 3980749477. The next prime is 3980749499. The reversal of 3980749491 is 1949470893.

3980749491 is a `hidden beast` number, since 3 + 9 + 80 + 74 + 9 + 491 = 666.

It is not a de Polignac number, because 3980749491 - 2⁷ = 3980749363 is a prime.

It is a super-3 number, since 3×3980749491³ (a number of 30 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (3980749499) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 113326 + ... + 144236.

It is an arithmetic number, because the mean of its divisors is an integer number (246136800).

Almost surely, 2^3980749491 is an apocalyptic number.

3980749491 is a deficient number, since it is larger than the sum of its proper divisors (1926533709).

3980749491 is a wasteful number, since it uses less digits than its factorization.

3980749491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31307 (or 31304 counting only the distinct ones).

The product of its (nonzero) digits is 1959552, while the sum is 54.

The square root of 3980749491 is about 63093.1810182368. The cubic root of 3980749491 is about 1584.8504326685.

It can be divided in two parts, 39807 and 49491, that added together give a palindrome (89298).

The spelling of 3980749491 in words is "three billion, nine hundred eighty million, seven hundred forty-nine thousand, four hundred ninety-one".