401430997 has 16 divisors (see below), whose sum is σ = 454164480. Its totient is φ = 351514800.

The previous prime is 401430973. The next prime is 401431001. The reversal of 401430997 is 799034104.

It is a cyclic number.

It is not a de Polignac number, because 401430997 - 2²⁷ = 267213269 is a prime.

It is a super-2 number, since 2×401430997² = 322293690704828018, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401430907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73404 + ... + 78682.

It is an arithmetic number, because the mean of its divisors is an integer number (28385280).

Almost surely, 2^401430997 is an apocalyptic number.

It is an amenable number.

401430997 is a deficient number, since it is larger than the sum of its proper divisors (52733483).

401430997 is a wasteful number, since it uses less digits than its factorization.

401430997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5544.

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 401430997 is about 20035.7429859738. The cubic root of 401430997 is about 737.6838937004.

The spelling of 401430997 in words is "four hundred one million, four hundred thirty thousand, nine hundred ninety-seven".