390499 has 2 divisors, whose sum is σ = 390500.
Its totient is φ = 390498.
The previous prime is 390493. The next prime is 390503. The reversal of 390499 is 994093.
It is a strong prime.
It is an emirp because it is prime and its reverse (994093) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 390499 - 23 = 390491 is a prime.
390499 is a lucky number.
It is not a weakly prime, because it can be changed into another prime (390491) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 195249 + 195250.
It is an arithmetic number, because the mean of its divisors is an integer number (195250).
2390499 is an apocalyptic number.
390499 is a deficient number, since it is larger than the sum of its proper divisors (1).
390499 is an equidigital number, since it uses as much as digits as its factorization.
390499 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 8748, while the sum is 34.
The square root of 390499 is about 624.8991918702.
The cubic root of 390499 is about 73.0925828504.
The spelling of 390499 in words is "three hundred ninety thousand, four hundred ninety-nine".