402094919 has 4 divisors (see below), whose sum is σ = 404200320. Its totient is φ = 399989520.

The previous prime is 402094841. The next prime is 402094943. The reversal of 402094919 is 919490204.

It is a happy number.

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 402094919 - 2²⁰ = 401046343 is a prime.

It is a super-2 number, since 2×402094919² = 323360647771233122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402094619) 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, 1052414 + ... + 1052795.

It is an arithmetic number, because the mean of its divisors is an integer number (101050080).

Almost surely, 2^402094919 is an apocalyptic number.

402094919 is a deficient number, since it is larger than the sum of its proper divisors (2105401).

402094919 is a wasteful number, since it uses less digits than its factorization.

402094919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2105400.

The product of its (nonzero) digits is 23328, while the sum is 38.

The square root of 402094919 is about 20052.3045807708. The cubic root of 402094919 is about 738.0903519396.

The spelling of 402094919 in words is "four hundred two million, ninety-four thousand, nine hundred nineteen".