497990 has 16 divisors (see below), whose sum is σ = 943920. Its totient is φ = 188640.

The previous prime is 497989. The next prime is 497993. The reversal of 497990 is 99794.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (497993) 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, 1121 + ... + 1500.

It is an arithmetic number, because the mean of its divisors is an integer number (58995).

2⁴⁹⁷⁹⁹⁰ is an apocalyptic number.

497990 is a deficient number, since it is larger than the sum of its proper divisors (445930).

497990 is a wasteful number, since it uses less digits than its factorization.

497990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2647.

The product of its (nonzero) digits is 20412, while the sum is 38.

The square root of 497990 is about 705.6840652870. The cubic root of 497990 is about 79.2635538919.

The spelling of 497990 in words is "four hundred ninety-seven thousand, nine hundred ninety".