366016421 has 4 divisors (see below), whose sum is σ = 366055872. Its totient is φ = 365976972.

The previous prime is 366016403. The next prime is 366016429. The reversal of 366016421 is 124610663.

It is a happy number.

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 a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 124610663 = 17 ⋅7330039.

It is a cyclic number.

It is not a de Polignac number, because 366016421 - 2²² = 361822117 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 (366016429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2660 + ... + 27186.

It is an arithmetic number, because the mean of its divisors is an integer number (91513968).

Almost surely, 2^366016421 is an apocalyptic number.

It is an amenable number.

366016421 is a deficient number, since it is larger than the sum of its proper divisors (39451).

366016421 is a wasteful number, since it uses less digits than its factorization.

366016421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39450.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 366016421 is about 19131.5556346054. Note that the first 3 decimals coincide. The cubic root of 366016421 is about 715.3197070574.

The spelling of 366016421 in words is "three hundred sixty-six million, sixteen thousand, four hundred twenty-one".