402354451 has 4 divisors (see below), whose sum is σ = 410915232. Its totient is φ = 393793672.

The previous prime is 402354413. The next prime is 402354457. The reversal of 402354451 is 154453204.

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

It is a cyclic number.

It is not a de Polignac number, because 402354451 - 2¹¹ = 402352403 is a prime.

It is a super-2 number, since 2×402354451² = 323778208479022802, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (402354457) 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, 4280320 + ... + 4280413.

It is an arithmetic number, because the mean of its divisors is an integer number (102728808).

Almost surely, 2^402354451 is an apocalyptic number.

402354451 is a deficient number, since it is larger than the sum of its proper divisors (8560781).

402354451 is an equidigital number, since it uses as much as digits as its factorization.

402354451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8560780.

The product of its (nonzero) digits is 9600, while the sum is 28.

The square root of 402354451 is about 20058.7749127408. The cubic root of 402354451 is about 738.2491178240.

The spelling of 402354451 in words is "four hundred two million, three hundred fifty-four thousand, four hundred fifty-one".