401627466749 has 2 divisors, whose sum is σ = 401627466750. Its totient is φ = 401627466748.

The previous prime is 401627466731. The next prime is 401627466781. The reversal of 401627466749 is 947664726104.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 387777707524 + 13849759225 = 622718^2 + 117685^2 .

It is a cyclic number.

It is not a de Polignac number, because 401627466749 - 2¹² = 401627462653 is a prime.

It is a super-2 number, since 2×401627466749² (a number of 24 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 401627466694 and 401627466703.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (401627466719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200813733374 + 200813733375.

It is an arithmetic number, because the mean of its divisors is an integer number (200813733375).

Almost surely, 2^401627466749 is an apocalyptic number.

It is an amenable number.

401627466749 is a deficient number, since it is larger than the sum of its proper divisors (1).

401627466749 is an equidigital number, since it uses as much as digits as its factorization.

401627466749 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12192768, while the sum is 56.

The spelling of 401627466749 in words is "four hundred one billion, six hundred twenty-seven million, four hundred sixty-six thousand, seven hundred forty-nine".