291423364 has 6 divisors (see below), whose sum is σ = 509990894. Its totient is φ = 145711680.

The previous prime is 291423287. The next prime is 291423371. The reversal of 291423364 is 463324192.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 188238400 + 103184964 = 13720^2 + 10158^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36427917 + ... + 36427924.

Almost surely, 2^291423364 is an apocalyptic number.

It is an amenable number.

291423364 is a deficient number, since it is larger than the sum of its proper divisors (218567530).

291423364 is a wasteful number, since it uses less digits than its factorization.

291423364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72855845 (or 72855843 counting only the distinct ones).

The product of its digits is 31104, while the sum is 34.

The square root of 291423364 is about 17071.1266177719. The cubic root of 291423364 is about 662.9917471163.

The spelling of 291423364 in words is "two hundred ninety-one million, four hundred twenty-three thousand, three hundred sixty-four".