994138379 has 16 divisors (see below), whose sum is σ = 1089837504. Its totient is φ = 901286400.

The previous prime is 994138363. The next prime is 994138381. The reversal of 994138379 is 973831499.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 994138379 - 2⁴ = 994138363 is a prime.

It is a super-2 number, since 2×994138379² = 1976622233201495282, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 994138379.

It is not an unprimeable number, because it can be changed into a prime (994138399) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 257447 + ... + 261279.

It is an arithmetic number, because the mean of its divisors is an integer number (68114844).

Almost surely, 2^994138379 is an apocalyptic number.

994138379 is a deficient number, since it is larger than the sum of its proper divisors (95699125).

994138379 is a wasteful number, since it uses less digits than its factorization.

994138379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4198.

The product of its digits is 1469664, while the sum is 53.

The square root of 994138379 is about 31529.9600221757. The cubic root of 994138379 is about 998.0422962303.

The spelling of 994138379 in words is "nine hundred ninety-four million, one hundred thirty-eight thousand, three hundred seventy-nine".