94778949 has 4 divisors (see below), whose sum is σ = 126371936. Its totient is φ = 63185964.

The previous prime is 94778947. The next prime is 94778953. The reversal of 94778949 is 94987749.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 94987749 = 3 ⋅31662583.

It is not a de Polignac number, because 94778949 - 2¹ = 94778947 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (94778947) 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 3 ways as a sum of consecutive naturals, for example, 15796489 + ... + 15796494.

It is an arithmetic number, because the mean of its divisors is an integer number (31592984).

Almost surely, 2^94778949 is an apocalyptic number.

It is an amenable number.

94778949 is a deficient number, since it is larger than the sum of its proper divisors (31592987).

94778949 is a wasteful number, since it uses less digits than its factorization.

94778949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31592986.

The product of its digits is 4572288, while the sum is 57.

The square root of 94778949 is about 9735.4480636486. The cubic root of 94778949 is about 455.9360819535.

The spelling of 94778949 in words is "ninety-four million, seven hundred seventy-eight thousand, nine hundred forty-nine".