46219721 has 4 divisors (see below), whose sum is σ = 46677444. Its totient is φ = 45762000.

The previous prime is 46219717. The next prime is 46219727. The reversal of 46219721 is 12791264.

It is a happy number.

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 24364096 + 21855625 = 4936^2 + 4675^2 .

It is a cyclic number.

It is not a de Polignac number, because 46219721 - 2² = 46219717 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (46219727) 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, 228710 + ... + 228911.

It is an arithmetic number, because the mean of its divisors is an integer number (11669361).

Almost surely, 2^46219721 is an apocalyptic number.

It is an amenable number.

46219721 is a deficient number, since it is larger than the sum of its proper divisors (457723).

46219721 is a wasteful number, since it uses less digits than its factorization.

46219721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 457722.

The product of its digits is 6048, while the sum is 32.

The square root of 46219721 is about 6798.5087335386. The cubic root of 46219721 is about 358.8743673184.

The spelling of 46219721 in words is "forty-six million, two hundred nineteen thousand, seven hundred twenty-one".