402087394 has 8 divisors (see below), whose sum is σ = 603852480. Its totient is φ = 200803236.

The previous prime is 402087379. The next prime is 402087409. The reversal of 402087394 is 493780204.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (402087379) and next prime (402087409).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×402087394² = 323348544827422472, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 118134 + ... + 121489.

It is an arithmetic number, because the mean of its divisors is an integer number (75481560).

Almost surely, 2^402087394 is an apocalyptic number.

402087394 is a deficient number, since it is larger than the sum of its proper divisors (201765086).

402087394 is a wasteful number, since it uses less digits than its factorization.

402087394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240464.

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 402087394 is about 20052.1169455995. The cubic root of 402087394 is about 738.0857475835.

The spelling of 402087394 in words is "four hundred two million, eighty-seven thousand, three hundred ninety-four".