4149781404 has 12 divisors (see below), whose sum is σ = 9682823304. Its totient is φ = 1383260464.

The previous prime is 4149781403. The next prime is 4149781409. The reversal of 4149781404 is 4041879414.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×4149781404² = 34441371401968422432, which contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4149781403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 172907547 + ... + 172907570.

It is an arithmetic number, because the mean of its divisors is an integer number (806901942).

Almost surely, 2^4149781404 is an apocalyptic number.

It is an amenable number.

4149781404 is an abundant number, since it is smaller than the sum of its proper divisors (5533041900).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4149781404 is a wasteful number, since it uses less digits than its factorization.

4149781404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345815124 (or 345815122 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 42.

The square root of 4149781404 is about 64418.7969772799. The cubic root of 4149781404 is about 1606.9723592240.

The spelling of 4149781404 in words is "four billion, one hundred forty-nine million, seven hundred eighty-one thousand, four hundred four".