401429387 has 2 divisors, whose sum is σ = 401429388. Its totient is φ = 401429386.

The previous prime is 401429383. The next prime is 401429407. The reversal of 401429387 is 783924104.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 401429387 - 2² = 401429383 is a prime.

It is a super-2 number, since 2×401429387² = 322291105494391538, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 401429387.

It is not a weakly prime, because it can be changed into another prime (401429383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200714693 + 200714694.

It is an arithmetic number, because the mean of its divisors is an integer number (200714694).

Almost surely, 2^401429387 is an apocalyptic number.

401429387 is a deficient number, since it is larger than the sum of its proper divisors (1).

401429387 is an equidigital number, since it uses as much as digits as its factorization.

401429387 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 401429387 is about 20035.7028077380. The cubic root of 401429387 is about 737.6829075013.

The spelling of 401429387 in words is "four hundred one million, four hundred twenty-nine thousand, three hundred eighty-seven".