374473821 has 4 divisors (see below), whose sum is σ = 499298432. Its totient is φ = 249649212.

The previous prime is 374473811. The next prime is 374473829. The reversal of 374473821 is 128374473.

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 not a de Polignac number, because 374473821 - 2¹⁰ = 374472797 is a prime.

It is a super-2 number, since 2×374473821² = 280461285228680082, which contains 22 as substring.

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 374473821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (374473829) 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, 62412301 + ... + 62412306.

It is an arithmetic number, because the mean of its divisors is an integer number (124824608).

Almost surely, 2^374473821 is an apocalyptic number.

It is an amenable number.

374473821 is a deficient number, since it is larger than the sum of its proper divisors (124824611).

374473821 is a wasteful number, since it uses less digits than its factorization.

374473821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124824610.

The product of its digits is 112896, while the sum is 39.

The square root of 374473821 is about 19351.3260785921. The cubic root of 374473821 is about 720.7873466410.

The spelling of 374473821 in words is "three hundred seventy-four million, four hundred seventy-three thousand, eight hundred twenty-one".