147977069 has 2 divisors, whose sum is σ = 147977070. Its totient is φ = 147977068.

The previous prime is 147977051. The next prime is 147977161. The reversal of 147977069 is 960779741.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 111555844 + 36421225 = 10562^2 + 6035^2 .

It is a cyclic number.

It is not a de Polignac number, because 147977069 - 2⁸ = 147976813 is a prime.

It is a super-2 number, since 2×147977069² = 43794425899661522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (147977969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73988534 + 73988535.

It is an arithmetic number, because the mean of its divisors is an integer number (73988535).

Almost surely, 2^147977069 is an apocalyptic number.

It is an amenable number.

147977069 is a deficient number, since it is larger than the sum of its proper divisors (1).

147977069 is an equidigital number, since it uses as much as digits as its factorization.

147977069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 666792, while the sum is 50.

The square root of 147977069 is about 12164.5825657932. The cubic root of 147977069 is about 528.9299271227.

The spelling of 147977069 in words is "one hundred forty-seven million, nine hundred seventy-seven thousand, sixty-nine".