290542649 has 8 divisors (see below), whose sum is σ = 292144320. Its totient is φ = 288946096.

The previous prime is 290542639. The next prime is 290542657. The reversal of 290542649 is 946245092.

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 a de Polignac number, because none of the positive numbers 2^k-290542649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (290542639) 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, 166787 + ... + 168519.

It is an arithmetic number, because the mean of its divisors is an integer number (36518040).

Almost surely, 2^290542649 is an apocalyptic number.

It is an amenable number.

290542649 is a deficient number, since it is larger than the sum of its proper divisors (1601671).

290542649 is a wasteful number, since it uses less digits than its factorization.

290542649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2559.

The product of its (nonzero) digits is 155520, while the sum is 41.

The square root of 290542649 is about 17045.3116427949. The cubic root of 290542649 is about 662.3231940197.

It can be divided in two parts, 2905 and 42649, that added together give a palindrome (45554).

The spelling of 290542649 in words is "two hundred ninety million, five hundred forty-two thousand, six hundred forty-nine".