402033997 has 4 divisors (see below), whose sum is σ = 419513760. Its totient is φ = 384554236.

The previous prime is 402033959. The next prime is 402034001. The reversal of 402033997 is 799330204.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 402033997 - 2⁷ = 402033869 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 (402033917) 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, 8739847 + ... + 8739892.

It is an arithmetic number, because the mean of its divisors is an integer number (104878440).

Almost surely, 2^402033997 is an apocalyptic number.

It is an amenable number.

402033997 is a deficient number, since it is larger than the sum of its proper divisors (17479763).

402033997 is a wasteful number, since it uses less digits than its factorization.

402033997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17479762.

The product of its (nonzero) digits is 40824, while the sum is 37.

The square root of 402033997 is about 20050.7854459620. The cubic root of 402033997 is about 738.0530736673.

The spelling of 402033997 in words is "four hundred two million, thirty-three thousand, nine hundred ninety-seven".