47698121 has 4 divisors (see below), whose sum is σ = 47826372. Its totient is φ = 47569872.

The previous prime is 47698103. The next prime is 47698153. The reversal of 47698121 is 12189674.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9703225 + 37994896 = 3115^2 + 6164^2 .

It is a cyclic number.

It is not a de Polignac number, because 47698121 - 2¹⁸ = 47435977 is a prime.

It is a super-2 number, since 2×47698121² = 4550221493861282, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47695121) 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, 63566 + ... + 64311.

It is an arithmetic number, because the mean of its divisors is an integer number (11956593).

Almost surely, 2^47698121 is an apocalyptic number.

It is an amenable number.

47698121 is a deficient number, since it is larger than the sum of its proper divisors (128251).

47698121 is a wasteful number, since it uses less digits than its factorization.

47698121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128250.

The product of its digits is 24192, while the sum is 38.

The square root of 47698121 is about 6906.3826276858. The cubic root of 47698121 is about 362.6606400195.

The spelling of 47698121 in words is "forty-seven million, six hundred ninety-eight thousand, one hundred twenty-one".