434449390 has 16 divisors (see below), whose sum is σ = 791432208. Its totient is φ = 171685696.

The previous prime is 434449387. The next prime is 434449409. The reversal of 434449390 is 93944434.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 260887 + ... + 262546.

It is an arithmetic number, because the mean of its divisors is an integer number (49464513).

Almost surely, 2^434449390 is an apocalyptic number.

434449390 is a deficient number, since it is larger than the sum of its proper divisors (356982818).

434449390 is a wasteful number, since it uses less digits than its factorization.

434449390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 523523.

The product of its (nonzero) digits is 186624, while the sum is 40.

The square root of 434449390 is about 20843.4495705485. The cubic root of 434449390 is about 757.3786594880.

The spelling of 434449390 in words is "four hundred thirty-four million, four hundred forty-nine thousand, three hundred ninety".