391949119 has 8 divisors (see below), whose sum is σ = 415350000. Its totient is φ = 368825472.

The previous prime is 391949113. The next prime is 391949137. The reversal of 391949119 is 911949193.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 391949119 - 2¹⁷ = 391818047 is a prime.

It is a super-2 number, since 2×391949119² = 307248223769752322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (391949113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66394 + ... + 72055.

It is an arithmetic number, because the mean of its divisors is an integer number (51918750).

Almost surely, 2^391949119 is an apocalyptic number.

391949119 is a deficient number, since it is larger than the sum of its proper divisors (23400881).

391949119 is a wasteful number, since it uses less digits than its factorization.

391949119 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138617.

The product of its digits is 78732, while the sum is 46.

The square root of 391949119 is about 19797.7048922344. The cubic root of 391949119 is about 731.8294758158.

The spelling of 391949119 in words is "three hundred ninety-one million, nine hundred forty-nine thousand, one hundred nineteen".