252939394 has 8 divisors (see below), whose sum is σ = 380535948. Its totient is φ = 126094080.

The previous prime is 252939391. The next prime is 252939397. The reversal of 252939394 is 493939252.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (252939391) and next prime (252939397).

It can be written as a sum of positive squares in 2 ways, for example, as 252651025 + 288369 = 15895^2 + 537^2 .

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

It is not an unprimeable number, because it can be changed into a prime (252939391) 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, 186967 + ... + 188314.

Almost surely, 2^252939394 is an apocalyptic number.

252939394 is a deficient number, since it is larger than the sum of its proper divisors (127596554).

252939394 is a wasteful number, since it uses less digits than its factorization.

252939394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375620.

The product of its digits is 524880, while the sum is 46.

The square root of 252939394 is about 15904.0684731926. The cubic root of 252939394 is about 632.4198476758.

The spelling of 252939394 in words is "two hundred fifty-two million, nine hundred thirty-nine thousand, three hundred ninety-four".