79378450 has 12 divisors (see below), whose sum is σ = 147644010. Its totient is φ = 31751360.

The previous prime is 79378433. The next prime is 79378459. The reversal of 79378450 is 5487397.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 75220929 + 4157521 = 8673^2 + 2039^2 .

It is a junction number, because it is equal to n+sod(n) for n = 79378397 and 79378406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79378459) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 793735 + ... + 793834.

Almost surely, 2^79378450 is an apocalyptic number.

79378450 is a deficient number, since it is larger than the sum of its proper divisors (68265560).

79378450 is a wasteful number, since it uses less digits than its factorization.

79378450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1587581 (or 1587576 counting only the distinct ones).

The product of its (nonzero) digits is 211680, while the sum is 43.

The square root of 79378450 is about 8909.4584571679. The cubic root of 79378450 is about 429.7681280984.

The spelling of 79378450 in words is "seventy-nine million, three hundred seventy-eight thousand, four hundred fifty".