130729397 has 4 divisors (see below), whose sum is σ = 131393196. Its totient is φ = 130065600.

The previous prime is 130729381. The next prime is 130729441. The reversal of 130729397 is 793927031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 793927031 = 907 ⋅875333.

It can be written as a sum of positive squares in 2 ways, for example, as 61606801 + 69122596 = 7849^2 + 8314^2 .

It is a cyclic number.

It is not a de Polignac number, because 130729397 - 2⁴ = 130729381 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 (130729297) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 331604 + ... + 331997.

It is an arithmetic number, because the mean of its divisors is an integer number (32848299).

Almost surely, 2^130729397 is an apocalyptic number.

It is an amenable number.

130729397 is a deficient number, since it is larger than the sum of its proper divisors (663799).

130729397 is an equidigital number, since it uses as much as digits as its factorization.

130729397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 663798.

The product of its (nonzero) digits is 71442, while the sum is 41.

The square root of 130729397 is about 11433.6956842484. The cubic root of 130729397 is about 507.5253655210.

The spelling of 130729397 in words is "one hundred thirty million, seven hundred twenty-nine thousand, three hundred ninety-seven".