46439404421 has 2 divisors, whose sum is σ = 46439404422. Its totient is φ = 46439404420.

The previous prime is 46439404399. The next prime is 46439404433. The reversal of 46439404421 is 12440493464.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36057832321 + 10381572100 = 189889^2 + 101890^2 .

It is a cyclic number.

It is not a de Polignac number, because 46439404421 - 2¹⁰ = 46439403397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (46439404471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23219702210 + 23219702211.

It is an arithmetic number, because the mean of its divisors is an integer number (23219702211).

Almost surely, 2^46439404421 is an apocalyptic number.

It is an amenable number.

46439404421 is a deficient number, since it is larger than the sum of its proper divisors (1).

46439404421 is an equidigital number, since it uses as much as digits as its factorization.

46439404421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 331776, while the sum is 41.

Adding to 46439404421 its reverse (12440493464), we get a palindrome (58879897885).

The spelling of 46439404421 in words is "forty-six billion, four hundred thirty-nine million, four hundred four thousand, four hundred twenty-one".