434009978 has 8 divisors (see below), whose sum is σ = 651265140. Its totient is φ = 216921600.

The previous prime is 434009929. The next prime is 434010001. The reversal of 434009978 is 879900434.

It can be written as a sum of positive squares in 2 ways, for example, as 421357729 + 12652249 = 20527^2 + 3557^2 .

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

It is a super-2 number, since 2×434009978² = 376729322007120968, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34973 + ... + 45728.

Almost surely, 2^434009978 is an apocalyptic number.

434009978 is a deficient number, since it is larger than the sum of its proper divisors (217255162).

434009978 is a wasteful number, since it uses less digits than its factorization.

434009978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83392.

The product of its (nonzero) digits is 217728, while the sum is 44.

The square root of 434009978 is about 20832.9061342867. The cubic root of 434009978 is about 757.1232300156.

The spelling of 434009978 in words is "four hundred thirty-four million, nine thousand, nine hundred seventy-eight".