402406351 has 4 divisors (see below), whose sum is σ = 404491552. Its totient is φ = 400321152.

The previous prime is 402406297. The next prime is 402406379. The reversal of 402406351 is 153604204.

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 402406351 - 2⁷ = 402406223 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402406391) 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, 1042311 + ... + 1042696.

It is an arithmetic number, because the mean of its divisors is an integer number (101122888).

Almost surely, 2^402406351 is an apocalyptic number.

402406351 is a deficient number, since it is larger than the sum of its proper divisors (2085201).

402406351 is a wasteful number, since it uses less digits than its factorization.

402406351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2085200.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 402406351 is about 20060.0685691749. The cubic root of 402406351 is about 738.2808588936.

The spelling of 402406351 in words is "four hundred two million, four hundred six thousand, three hundred fifty-one".