202473989 has 4 divisors (see below), whose sum is σ = 209005440. Its totient is φ = 195942540.

The previous prime is 202473983. The next prime is 202474043. The reversal of 202473989 is 989374202.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 989374202 = 2 ⋅494687101.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-202473989 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 (202473983) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3265679 + ... + 3265740.

It is an arithmetic number, because the mean of its divisors is an integer number (52251360).

Almost surely, 2^202473989 is an apocalyptic number.

It is an amenable number.

202473989 is a deficient number, since it is larger than the sum of its proper divisors (6531451).

202473989 is an equidigital number, since it uses as much as digits as its factorization.

202473989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6531450.

The product of its (nonzero) digits is 217728, while the sum is 44.

The square root of 202473989 is about 14229.3355080271. The cubic root of 202473989 is about 587.2050019821.

The spelling of 202473989 in words is "two hundred two million, four hundred seventy-three thousand, nine hundred eighty-nine".