401172407 has 2 divisors, whose sum is σ = 401172408. Its totient is φ = 401172406.

The previous prime is 401172397. The next prime is 401172427. The reversal of 401172407 is 704271104.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 401172407 - 2⁴ = 401172391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (401172427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200586203 + 200586204.

It is an arithmetic number, because the mean of its divisors is an integer number (200586204).

Almost surely, 2^401172407 is an apocalyptic number.

401172407 is a deficient number, since it is larger than the sum of its proper divisors (1).

401172407 is an equidigital number, since it uses as much as digits as its factorization.

401172407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1568, while the sum is 26.

The square root of 401172407 is about 20029.2887292585. The cubic root of 401172407 is about 737.5254616126.

It can be divided in two parts, 40117 and 2407, that added together give a palindrome (42524).

The spelling of 401172407 in words is "four hundred one million, one hundred seventy-two thousand, four hundred seven".