378339949 has 16 divisors (see below), whose sum is σ = 427593600. Its totient is φ = 332139456.

The previous prime is 378339943. The next prime is 378339961. The reversal of 378339949 is 949933873.

It is a cyclic number.

It is not a de Polignac number, because 378339949 - 2¹¹ = 378337901 is a prime.

It is a super-2 number, since 2×378339949² = 286282234018645202, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 378339949.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (378339943) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 49987 + ... + 57055.

It is an arithmetic number, because the mean of its divisors is an integer number (26724600).

Almost surely, 2^378339949 is an apocalyptic number.

It is an amenable number.

378339949 is a deficient number, since it is larger than the sum of its proper divisors (49253651).

378339949 is a wasteful number, since it uses less digits than its factorization.

378339949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7284.

The product of its digits is 4408992, while the sum is 55.

The square root of 378339949 is about 19450.9626754050. The cubic root of 378339949 is about 723.2593670724.

The spelling of 378339949 in words is "three hundred seventy-eight million, three hundred thirty-nine thousand, nine hundred forty-nine".