79351389 has 12 divisors (see below), whose sum is σ = 123435676. Its totient is φ = 48831552.

The previous prime is 79351387. The next prime is 79351399. The reversal of 79351389 is 98315397.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 32319225 + 47032164 = 5685^2 + 6858^2 .

It is not a de Polignac number, because 79351389 - 2¹ = 79351387 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79351387) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 338992 + ... + 339225.

Almost surely, 2^79351389 is an apocalyptic number.

It is an amenable number.

79351389 is a deficient number, since it is larger than the sum of its proper divisors (44084287).

79351389 is a wasteful number, since it uses less digits than its factorization.

79351389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 678236 (or 678233 counting only the distinct ones).

The product of its digits is 204120, while the sum is 45.

The square root of 79351389 is about 8907.9396607745. The cubic root of 79351389 is about 429.7192849629.

The spelling of 79351389 in words is "seventy-nine million, three hundred fifty-one thousand, three hundred eighty-nine".