30409490 has 8 divisors (see below), whose sum is σ = 54737100. Its totient is φ = 12163792.

The previous prime is 30409469. The next prime is 30409499. The reversal of 30409490 is 9490403.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 27762361 + 2647129 = 5269^2 + 1627^2 .

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

It is not an unprimeable number, because it can be changed into a prime (30409499) 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, 1520465 + ... + 1520484.

Almost surely, 2^30409490 is an apocalyptic number.

30409490 is a deficient number, since it is larger than the sum of its proper divisors (24327610).

30409490 is a wasteful number, since it uses less digits than its factorization.

30409490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3040956.

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 30409490 is about 5514.4800298850. The cubic root of 30409490 is about 312.1306227655.

Adding to 30409490 its reverse (9490403), we get a palindrome (39899893).

The spelling of 30409490 in words is "thirty million, four hundred nine thousand, four hundred ninety".