149394649 has 2 divisors, whose sum is σ = 149394650. Its totient is φ = 149394648.

The previous prime is 149394643. The next prime is 149394659. The reversal of 149394649 is 946493941.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 132089049 + 17305600 = 11493^2 + 4160^2 .

It is a cyclic number.

It is not a de Polignac number, because 149394649 - 2⁵ = 149394617 is a prime.

It is a super-2 number, since 2×149394649² = 44637522299666402, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (149394643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74697324 + 74697325.

It is an arithmetic number, because the mean of its divisors is an integer number (74697325).

Almost surely, 2^149394649 is an apocalyptic number.

It is an amenable number.

149394649 is a deficient number, since it is larger than the sum of its proper divisors (1).

149394649 is an equidigital number, since it uses as much as digits as its factorization.

149394649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 839808, while the sum is 49.

The square root of 149394649 is about 12222.7103786353. The cubic root of 149394649 is about 530.6135637793.

The spelling of 149394649 in words is "one hundred forty-nine million, three hundred ninety-four thousand, six hundred forty-nine".