474400621 has 4 divisors (see below), whose sum is σ = 474836544. Its totient is φ = 473964700.

The previous prime is 474400613. The next prime is 474400631. The reversal of 474400621 is 126004474.

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: 126004474 = 2 ⋅63002237.

It is a cyclic number.

It is not a de Polignac number, because 474400621 - 2³ = 474400613 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 474400621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (474400631) 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, 216325 + ... + 218506.

It is an arithmetic number, because the mean of its divisors is an integer number (118709136).

Almost surely, 2^474400621 is an apocalyptic number.

It is an amenable number.

474400621 is a deficient number, since it is larger than the sum of its proper divisors (435923).

474400621 is a wasteful number, since it uses less digits than its factorization.

474400621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 435922.

The product of its (nonzero) digits is 5376, while the sum is 28.

The square root of 474400621 is about 21780.7396798180. The cubic root of 474400621 is about 779.9170528714.

The spelling of 474400621 in words is "four hundred seventy-four million, four hundred thousand, six hundred twenty-one".