401403253477 has 2 divisors, whose sum is σ = 401403253478. Its totient is φ = 401403253476.

The previous prime is 401403253429. The next prime is 401403253523. The reversal of 401403253477 is 774352304104.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 321170424961 + 80232828516 = 566719^2 + 283254^2 .

It is a cyclic number.

It is not a de Polignac number, because 401403253477 - 2¹⁵ = 401403220709 is a prime.

It is a super-2 number, since 2×401403253477² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (401403253417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200701626738 + 200701626739.

It is an arithmetic number, because the mean of its divisors is an integer number (200701626739).

Almost surely, 2^401403253477 is an apocalyptic number.

It is an amenable number.

401403253477 is a deficient number, since it is larger than the sum of its proper divisors (1).

401403253477 is an equidigital number, since it uses as much as digits as its factorization.

401403253477 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 282240, while the sum is 40.

The spelling of 401403253477 in words is "four hundred one billion, four hundred three million, two hundred fifty-three thousand, four hundred seventy-seven".