79099378 has 4 divisors (see below), whose sum is σ = 118649070. Its totient is φ = 39549688.

The previous prime is 79099357. The next prime is 79099379. The reversal of 79099378 is 87399097.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 73324969 + 5774409 = 8563^2 + 2403^2 .

It is not an unprimeable number, because it can be changed into a prime (79099379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19774843 + ... + 19774846.

Almost surely, 2^79099378 is an apocalyptic number.

79099378 is a deficient number, since it is larger than the sum of its proper divisors (39549692).

79099378 is a wasteful number, since it uses less digits than its factorization.

79099378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39549691.

The product of its (nonzero) digits is 857304, while the sum is 52.

The square root of 79099378 is about 8893.7831095659. The cubic root of 79099378 is about 429.2638893110.

The spelling of 79099378 in words is "seventy-nine million, ninety-nine thousand, three hundred seventy-eight".