519740397 has 12 divisors (see below), whose sum is σ = 818985024. Its totient is φ = 314994120.

The previous prime is 519740357. The next prime is 519740423. The reversal of 519740397 is 793047915.

519740397 is a `hidden beast` number, since 519 + 7 + 40 + 3 + 97 = 666.

It is not a de Polignac number, because 519740397 - 2¹⁰ = 519739373 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (519740357) 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, 2624853 + ... + 2625050.

It is an arithmetic number, because the mean of its divisors is an integer number (68248752).

Almost surely, 2^519740397 is an apocalyptic number.

It is an amenable number.

519740397 is a deficient number, since it is larger than the sum of its proper divisors (299244627).

519740397 is a wasteful number, since it uses less digits than its factorization.

519740397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5249920 (or 5249917 counting only the distinct ones).

The product of its (nonzero) digits is 238140, while the sum is 45.

The square root of 519740397 is about 22797.8156190456. The cubic root of 519740397 is about 804.0113098951.

The spelling of 519740397 in words is "five hundred nineteen million, seven hundred forty thousand, three hundred ninety-seven".