423990297 has 6 divisors (see below), whose sum is σ = 612430442. Its totient is φ = 282660192.

The previous prime is 423990293. The next prime is 423990299. The reversal of 423990297 is 792099324.

It can be written as a sum of positive squares in only one way, i.e., 353026521 + 70963776 = 18789^2 + 8424^2 .

It is not a de Polignac number, because 423990297 - 2² = 423990293 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (423990293) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 23555008 + ... + 23555025.

Almost surely, 2^423990297 is an apocalyptic number.

It is an amenable number.

423990297 is a deficient number, since it is larger than the sum of its proper divisors (188440145).

423990297 is a wasteful number, since it uses less digits than its factorization.

423990297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47110039 (or 47110036 counting only the distinct ones).

The product of its (nonzero) digits is 244944, while the sum is 45.

The square root of 423990297 is about 20591.0246709580. The cubic root of 423990297 is about 751.2514201023.

The spelling of 423990297 in words is "four hundred twenty-three million, nine hundred ninety thousand, two hundred ninety-seven".