10219394 has 4 divisors (see below), whose sum is σ = 15329094. Its totient is φ = 5109696.

The previous prime is 10219379. The next prime is 10219399. The reversal of 10219394 is 49391201.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 49391201 = 59 ⋅837139.

It can be written as a sum of positive squares in only one way, i.e., 6436369 + 3783025 = 2537^2 + 1945^2 .

It is not an unprimeable number, because it can be changed into a prime (10219399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2554847 + ... + 2554850.

Almost surely, 2^10219394 is an apocalyptic number.

10219394 is a deficient number, since it is larger than the sum of its proper divisors (5109700).

10219394 is an equidigital number, since it uses as much as digits as its factorization.

10219394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5109699.

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 10219394 is about 3196.7786911202. The cubic root of 10219394 is about 217.0076519065.

The spelling of 10219394 in words is "ten million, two hundred nineteen thousand, three hundred ninety-four".