391742104 has 16 divisors (see below), whose sum is σ = 791017920. Its totient is φ = 180804000.

The previous prime is 391742077. The next prime is 391742137. The reversal of 391742104 is 401247193.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1883272 + ... + 1883479.

It is an arithmetic number, because the mean of its divisors is an integer number (49438620).

Almost surely, 2^391742104 is an apocalyptic number.

It is an amenable number.

391742104 is an abundant number, since it is smaller than the sum of its proper divisors (399275816).

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

391742104 is a wasteful number, since it uses less digits than its factorization.

391742104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3766770 (or 3766766 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 391742104 is about 19792.4759441562. The cubic root of 391742104 is about 731.7006101443.

Adding to 391742104 its reverse (401247193), we get a palindrome (792989297).

The spelling of 391742104 in words is "three hundred ninety-one million, seven hundred forty-two thousand, one hundred four".