520190407 has 8 divisors (see below), whose sum is σ = 579555072. Its totient is φ = 462838200.

The previous prime is 520190399. The next prime is 520190423. The reversal of 520190407 is 704091025.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 520190407 - 2³ = 520190399 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 (520190467) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 502569 + ... + 503602.

It is an arithmetic number, because the mean of its divisors is an integer number (72444384).

Almost surely, 2^520190407 is an apocalyptic number.

520190407 is a deficient number, since it is larger than the sum of its proper divisors (59364665).

520190407 is a wasteful number, since it uses less digits than its factorization.

520190407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1006229.

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 520190407 is about 22807.6830695273. The cubic root of 520190407 is about 804.2432902955.

The spelling of 520190407 in words is "five hundred twenty million, one hundred ninety thousand, four hundred seven".