130409397 has 24 divisors (see below), whose sum is σ = 204324120. Its totient is φ = 79825920.

The previous prime is 130409311. The next prime is 130409417. The reversal of 130409397 is 793904031.

It can be written as a sum of positive squares in 4 ways, for example, as 27468081 + 102941316 = 5241^2 + 10146^2 .

It is not a de Polignac number, because 130409397 - 2¹¹ = 130407349 is a prime.

It is a super-2 number, since 2×130409397² = 34013221651807218, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130407397) 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 in 23 ways as a sum of consecutive naturals, for example, 4122 + ... + 16667.

It is an arithmetic number, because the mean of its divisors is an integer number (8513505).

Almost surely, 2^130409397 is an apocalyptic number.

130409397 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

130409397 is a deficient number, since it is larger than the sum of its proper divisors (73914723).

130409397 is a wasteful number, since it uses less digits than its factorization.

130409397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20853 (or 20850 counting only the distinct ones).

The product of its (nonzero) digits is 20412, while the sum is 36.

The square root of 130409397 is about 11419.6933846754. The cubic root of 130409397 is about 507.1109195595.

The spelling of 130409397 in words is "one hundred thirty million, four hundred nine thousand, three hundred ninety-seven".