401129747 has 2 divisors, whose sum is σ = 401129748. Its totient is φ = 401129746.

The previous prime is 401129723. The next prime is 401129749. The reversal of 401129747 is 747921104.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-401129747 is a prime.

Together with 401129749, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (401129749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200564873 + 200564874.

It is an arithmetic number, because the mean of its divisors is an integer number (200564874).

Almost surely, 2^401129747 is an apocalyptic number.

401129747 is a deficient number, since it is larger than the sum of its proper divisors (1).

401129747 is an equidigital number, since it uses as much as digits as its factorization.

401129747 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14112, while the sum is 35.

The square root of 401129747 is about 20028.2237604836. The cubic root of 401129747 is about 737.4993182796.

The spelling of 401129747 in words is "four hundred one million, one hundred twenty-nine thousand, seven hundred forty-seven".