402535381 has 2 divisors, whose sum is σ = 402535382. Its totient is φ = 402535380.

The previous prime is 402535369. The next prime is 402535411. The reversal of 402535381 is 183535204.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 382554481 + 19980900 = 19559^2 + 4470^2 .

It is a cyclic number.

It is not a de Polignac number, because 402535381 - 2¹⁷ = 402404309 is a prime.

It is a super-2 number, since 2×402535381² = 324069465913630322, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (402535481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201267690 + 201267691.

It is an arithmetic number, because the mean of its divisors is an integer number (201267691).

Almost surely, 2^402535381 is an apocalyptic number.

It is an amenable number.

402535381 is a deficient number, since it is larger than the sum of its proper divisors (1).

402535381 is an equidigital number, since it uses as much as digits as its factorization.

402535381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 402535381 is about 20063.2844021112. The cubic root of 402535381 is about 738.3597594040.

The spelling of 402535381 in words is "four hundred two million, five hundred thirty-five thousand, three hundred eighty-one".