474309139 has 4 divisors (see below), whose sum is σ = 476072640. Its totient is φ = 472545640.

The previous prime is 474309113. The next prime is 474309149. The reversal of 474309139 is 931903474.

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: 931903474 = 2 ⋅465951737.

It is a cyclic number.

It is not a de Polignac number, because 474309139 - 2¹¹ = 474307091 is a prime.

It is a super-4 number, since 4×474309139⁴ (a number of 36 digits) contains 4444 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (474309149) 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, 881347 + ... + 881884.

It is an arithmetic number, because the mean of its divisors is an integer number (119018160).

Almost surely, 2^474309139 is an apocalyptic number.

474309139 is a deficient number, since it is larger than the sum of its proper divisors (1763501).

474309139 is a wasteful number, since it uses less digits than its factorization.

474309139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1763500.

The product of its (nonzero) digits is 81648, while the sum is 40.

The square root of 474309139 is about 21778.6395121458. The cubic root of 474309139 is about 779.8669173563.

The spelling of 474309139 in words is "four hundred seventy-four million, three hundred nine thousand, one hundred thirty-nine".