2421738947 has 2 divisors, whose sum is σ = 2421738948. Its totient is φ = 2421738946.

The previous prime is 2421738937. The next prime is 2421738971. The reversal of 2421738947 is 7498371242.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2421738947 - 2⁶ = 2421738883 is a prime.

It is not a weakly prime, because it can be changed into another prime (2421738937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1210869473 + 1210869474.

It is an arithmetic number, because the mean of its divisors is an integer number (1210869474).

Almost surely, 2^2421738947 is an apocalyptic number.

2421738947 is a deficient number, since it is larger than the sum of its proper divisors (1).

2421738947 is an equidigital number, since it uses as much as digits as its factorization.

2421738947 is an evil number, because the sum of its binary digits is even.

The product of its digits is 677376, while the sum is 47.

The square root of 2421738947 is about 49211.1668932977. The cubic root of 2421738947 is about 1342.8961912921.

The spelling of 2421738947 in words is "two billion, four hundred twenty-one million, seven hundred thirty-eight thousand, nine hundred forty-seven".