46878721 has 4 divisors (see below), whose sum is σ = 46898944. Its totient is φ = 46858500.

The previous prime is 46878709. The next prime is 46878749. The reversal of 46878721 is 12787864.

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 a cyclic number.

It is not a de Polignac number, because 46878721 - 2²³ = 38490113 is a prime.

It is a super-2 number, since 2×46878721² = 4395228965191682, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (46878121) 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, 6105 + ... + 11446.

It is an arithmetic number, because the mean of its divisors is an integer number (11724736).

Almost surely, 2^46878721 is an apocalyptic number.

It is an amenable number.

46878721 is a deficient number, since it is larger than the sum of its proper divisors (20223).

46878721 is a wasteful number, since it uses less digits than its factorization.

46878721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20222.

The product of its digits is 150528, while the sum is 43.

The square root of 46878721 is about 6846.8037068401. The cubic root of 46878721 is about 360.5719329656.

The spelling of 46878721 in words is "forty-six million, eight hundred seventy-eight thousand, seven hundred twenty-one".