149312477 has 2 divisors, whose sum is σ = 149312478. Its totient is φ = 149312476.

The previous prime is 149312419. The next prime is 149312483. The reversal of 149312477 is 774213941.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 148986436 + 326041 = 12206^2 + 571^2 .

It is a cyclic number.

It is not a de Polignac number, because 149312477 - 2⁸ = 149312221 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 149312477.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (149312497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74656238 + 74656239.

It is an arithmetic number, because the mean of its divisors is an integer number (74656239).

Almost surely, 2^149312477 is an apocalyptic number.

It is an amenable number.

149312477 is a deficient number, since it is larger than the sum of its proper divisors (1).

149312477 is an equidigital number, since it uses as much as digits as its factorization.

149312477 is an evil number, because the sum of its binary digits is even.

The product of its digits is 42336, while the sum is 38.

The square root of 149312477 is about 12219.3484687196. The cubic root of 149312477 is about 530.5162609316.

The spelling of 149312477 in words is "one hundred forty-nine million, three hundred twelve thousand, four hundred seventy-seven".