34978819 has 4 divisors (see below), whose sum is σ = 36107200. Its totient is φ = 33850440.

The previous prime is 34978817. The next prime is 34978841. The reversal of 34978819 is 91887943.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 91887943 = 7 ⋅13126849.

It is a cyclic number.

It is not a de Polignac number, because 34978819 - 2¹ = 34978817 is a prime.

It is a super-2 number, since 2×34978819² = 2447035557269522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (34978813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 564144 + ... + 564205.

It is an arithmetic number, because the mean of its divisors is an integer number (9026800).

Almost surely, 2^34978819 is an apocalyptic number.

34978819 is a deficient number, since it is larger than the sum of its proper divisors (1128381).

34978819 is a wasteful number, since it uses less digits than its factorization.

34978819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1128380.

The product of its digits is 435456, while the sum is 49.

The square root of 34978819 is about 5914.2893909581. The cubic root of 34978819 is about 327.0406325079.

The spelling of 34978819 in words is "thirty-four million, nine hundred seventy-eight thousand, eight hundred nineteen".