401378329 has 4 divisors (see below), whose sum is σ = 437867280. Its totient is φ = 364889380.

The previous prime is 401378317. The next prime is 401378333. The reversal of 401378329 is 923873104.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 401378329 - 2¹¹ = 401376281 is a prime.

It is a super-2 number, since 2×401378329² = 322209125981664482, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (401378389) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18244459 + ... + 18244480.

It is an arithmetic number, because the mean of its divisors is an integer number (109466820).

Almost surely, 2^401378329 is an apocalyptic number.

It is an amenable number.

401378329 is a deficient number, since it is larger than the sum of its proper divisors (36488951).

401378329 is a wasteful number, since it uses less digits than its factorization.

401378329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36488950.

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 401378329 is about 20034.4285918017. The cubic root of 401378329 is about 737.6516307586.

The spelling of 401378329 in words is "four hundred one million, three hundred seventy-eight thousand, three hundred twenty-nine".