3491389242 has 96 divisors (see below), whose sum is σ = 8378173440. Its totient is φ = 1041996960.

The previous prime is 3491389217. The next prime is 3491389247. The reversal of 3491389242 is 2429831943.

3491389242 is a `hidden beast` number, since 3 + 491 + 38 + 92 + 42 = 666.

3491389242 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (3491389247) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4724109 + ... + 4724847.

It is an arithmetic number, because the mean of its divisors is an integer number (87272640).

Almost surely, 2^3491389242 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3491389242, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4189086720).

3491389242 is an abundant number, since it is smaller than the sum of its proper divisors (4886784198).

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

3491389242 is a wasteful number, since it uses less digits than its factorization.

3491389242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1088 (or 1085 counting only the distinct ones).

The product of its digits is 373248, while the sum is 45.

The square root of 3491389242 is about 59087.9788281847. The cubic root of 3491389242 is about 1517.0483523741.

The spelling of 3491389242 in words is "three billion, four hundred ninety-one million, three hundred eighty-nine thousand, two hundred forty-two".