474990397 has 4 divisors (see below), whose sum is σ = 542846176. Its totient is φ = 407134620.

The previous prime is 474990377. The next prime is 474990407. The reversal of 474990397 is 793099474.

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.

It is a cyclic number.

It is not a de Polignac number, because 474990397 - 2¹⁵ = 474957629 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 (474990377) 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, 33927879 + ... + 33927892.

It is an arithmetic number, because the mean of its divisors is an integer number (135711544).

Almost surely, 2^474990397 is an apocalyptic number.

It is an amenable number.

474990397 is a deficient number, since it is larger than the sum of its proper divisors (67855779).

474990397 is an equidigital number, since it uses as much as digits as its factorization.

474990397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67855778.

The product of its (nonzero) digits is 1714608, while the sum is 52.

The square root of 474990397 is about 21794.2744086606. The cubic root of 474990397 is about 780.2401172860.

The spelling of 474990397 in words is "four hundred seventy-four million, nine hundred ninety thousand, three hundred ninety-seven".