402359641 has 8 divisors (see below), whose sum is σ = 404817480. Its totient is φ = 399908352.

The previous prime is 402359611. The next prime is 402359647. The reversal of 402359641 is 146953204.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 132710400 + 269649241 = 11520^2 + 16421^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 402359641 - 2⁷ = 402359513 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 402359597 and 402359606.

It is not an unprimeable number, because it can be changed into a prime (402359647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 175881 + ... + 178153.

It is an arithmetic number, because the mean of its divisors is an integer number (50602185).

Almost surely, 2^402359641 is an apocalyptic number.

It is an amenable number.

402359641 is a deficient number, since it is larger than the sum of its proper divisors (2457839).

402359641 is a wasteful number, since it uses less digits than its factorization.

402359641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3275.

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 402359641 is about 20058.9042821386. The cubic root of 402359641 is about 738.2522920538.

The spelling of 402359641 in words is "four hundred two million, three hundred fifty-nine thousand, six hundred forty-one".