425478739 has 8 divisors (see below), whose sum is σ = 486472448. Its totient is φ = 364537800.

The previous prime is 425478731. The next prime is 425478791. The reversal of 425478739 is 937874524.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 425478739 - 2³ = 425478731 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 425478692 and 425478701.

It is not an unprimeable number, because it can be changed into a prime (425478731) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5944 + ... + 29770.

It is an arithmetic number, because the mean of its divisors is an integer number (60809056).

Almost surely, 2^425478739 is an apocalyptic number.

425478739 is a deficient number, since it is larger than the sum of its proper divisors (60993709).

425478739 is a wasteful number, since it uses less digits than its factorization.

425478739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26385.

The product of its digits is 1693440, while the sum is 49.

The square root of 425478739 is about 20627.1359863651. The cubic root of 425478739 is about 752.1294969714.

The spelling of 425478739 in words is "four hundred twenty-five million, four hundred seventy-eight thousand, seven hundred thirty-nine".