94161421 has 4 divisors (see below), whose sum is σ = 94196700. Its totient is φ = 94126144.

The previous prime is 94161409. The next prime is 94161481. The reversal of 94161421 is 12416149.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12416149 = 569 ⋅21821.

It can be written as a sum of positive squares in 2 ways, for example, as 39564100 + 54597321 = 6290^2 + 7389^2 .

It is a cyclic number.

It is not a de Polignac number, because 94161421 - 2⁷ = 94161293 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 94161421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (94161401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13276 + ... + 19093.

It is an arithmetic number, because the mean of its divisors is an integer number (23549175).

Almost surely, 2^94161421 is an apocalyptic number.

It is an amenable number.

94161421 is a deficient number, since it is larger than the sum of its proper divisors (35279).

94161421 is a wasteful number, since it uses less digits than its factorization.

94161421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35278.

The product of its digits is 1728, while the sum is 28.

The square root of 94161421 is about 9703.6807964813. The cubic root of 94161421 is about 454.9437131998.

The spelling of 94161421 in words is "ninety-four million, one hundred sixty-one thousand, four hundred twenty-one".