147894949 has 4 divisors (see below), whose sum is σ = 149556780. Its totient is φ = 146233120.

The previous prime is 147894937. The next prime is 147894959. The reversal of 147894949 is 949498741.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 81993025 + 65901924 = 9055^2 + 8118^2 .

It is a cyclic number.

It is not a de Polignac number, because 147894949 - 2⁷ = 147894821 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 147894949.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (147894959) 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, 830782 + ... + 830959.

It is an arithmetic number, because the mean of its divisors is an integer number (37389195).

Almost surely, 2^147894949 is an apocalyptic number.

It is an amenable number.

147894949 is a deficient number, since it is larger than the sum of its proper divisors (1661831).

147894949 is an equidigital number, since it uses as much as digits as its factorization.

147894949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1661830.

The product of its digits is 2612736, while the sum is 55.

The square root of 147894949 is about 12161.2067246635. The cubic root of 147894949 is about 528.8320656471.

The spelling of 147894949 in words is "one hundred forty-seven million, eight hundred ninety-four thousand, nine hundred forty-nine".