401529389 has 10 divisors (see below), whose sum is σ = 422298150. Its totient is φ = 381328080.

The previous prime is 401529383. The next prime is 401529407. The reversal of 401529389 is 983925104.

It can be written as a sum of positive squares in 5 ways, for example, as 401401225 + 128164 = 20035^2 + 358^2 .

It is a de Polignac number, because none of the positive numbers 2^k-401529389 is a prime.

It is a super-2 number, since 2×401529389² = 322451700461426642, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401529383) 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 9 ways as a sum of consecutive naturals, for example, 6582419 + ... + 6582479.

It is an arithmetic number, because the mean of its divisors is an integer number (42229815).

Almost surely, 2^401529389 is an apocalyptic number.

It is an amenable number.

401529389 is a deficient number, since it is larger than the sum of its proper divisors (20768761).

401529389 is an frugal number, since it uses more digits than its factorization.

401529389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273 (or 90 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 41.

The square root of 401529389 is about 20038.1982473475. The cubic root of 401529389 is about 737.7441583245.

The spelling of 401529389 in words is "four hundred one million, five hundred twenty-nine thousand, three hundred eighty-nine".