401464993 has 4 divisors (see below), whose sum is σ = 402446980. Its totient is φ = 400483008.

The previous prime is 401464957. The next prime is 401464997. The reversal of 401464993 is 399464104.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 317980224 + 83484769 = 17832^2 + 9137^2 .

It is a cyclic number.

It is not a de Polignac number, because 401464993 - 2¹³ = 401456801 is a prime.

It is a super-2 number, since 2×401464993² = 322348281208980098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (401464997) 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 3 ways as a sum of consecutive naturals, for example, 490380 + ... + 491197.

It is an arithmetic number, because the mean of its divisors is an integer number (100611745).

Almost surely, 2^401464993 is an apocalyptic number.

It is an amenable number.

401464993 is a deficient number, since it is larger than the sum of its proper divisors (981987).

401464993 is an equidigital number, since it uses as much as digits as its factorization.

401464993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 981986.

The product of its (nonzero) digits is 93312, while the sum is 40.

The square root of 401464993 is about 20036.5913518243. The cubic root of 401464993 is about 737.7047171993.

The spelling of 401464993 in words is "four hundred one million, four hundred sixty-four thousand, nine hundred ninety-three".