79378459 has 2 divisors, whose sum is σ = 79378460. Its totient is φ = 79378458.

The previous prime is 79378433. The next prime is 79378463. The reversal of 79378459 is 95487397.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 79378459 - 2¹³ = 79370267 is a prime.

It is not a weakly prime, because it can be changed into another prime (79375459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39689229 + 39689230.

It is an arithmetic number, because the mean of its divisors is an integer number (39689230).

Almost surely, 2^79378459 is an apocalyptic number.

79378459 is a deficient number, since it is larger than the sum of its proper divisors (1).

79378459 is an equidigital number, since it uses as much as digits as its factorization.

79378459 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1905120, while the sum is 52.

The square root of 79378459 is about 8909.4589622491. The cubic root of 79378459 is about 429.7681443409.

The spelling of 79378459 in words is "seventy-nine million, three hundred seventy-eight thousand, four hundred fifty-nine".