44699667421 has 2 divisors, whose sum is σ = 44699667422. Its totient is φ = 44699667420.

The previous prime is 44699667371. The next prime is 44699667449. The reversal of 44699667421 is 12476699644.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23540764900 + 21158902521 = 153430^2 + 145461^2 .

It is a cyclic number.

It is not a de Polignac number, because 44699667421 - 2¹³ = 44699659229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (44699667491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22349833710 + 22349833711.

It is an arithmetic number, because the mean of its divisors is an integer number (22349833711).

Almost surely, 2^44699667421 is an apocalyptic number.

It is an amenable number.

44699667421 is a deficient number, since it is larger than the sum of its proper divisors (1).

44699667421 is an equidigital number, since it uses as much as digits as its factorization.

44699667421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15676416, while the sum is 58.

The spelling of 44699667421 in words is "forty-four billion, six hundred ninety-nine million, six hundred sixty-seven thousand, four hundred twenty-one".